You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@dolphinscheduler.apache.org by le...@apache.org on 2019/11/21 10:52:51 UTC

[incubator-dolphinscheduler-website] branch asf-site updated: test (#33)

This is an automated email from the ASF dual-hosted git repository.

leonbao pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/incubator-dolphinscheduler-website.git


The following commit(s) were added to refs/heads/asf-site by this push:
     new 30ea487  test (#33)
30ea487 is described below

commit 30ea487e96257d807fbdce810555363c8032248a
Author: bao liang <29...@users.noreply.github.com>
AuthorDate: Thu Nov 21 18:52:44 2019 +0800

    test (#33)
    
    * update asf-site
    
    * update asf-site
    
    * update asf-site
    
    * merge from upstream
    
    * merge from upstream
    
    * test
    
    * test
    
    * test
---
 build/blog.css                                     | 1817 -----------
 build/blog.js                                      |    6 -
 build/blogDetail.css                               | 3080 -------------------
 build/blogDetail.js                                |    6 -
 build/community.css                                | 1893 ------------
 build/community.js                                 |    6 -
 build/documentation.css                            | 3238 --------------------
 build/documentation.js                             |    6 -
 build/home.css                                     | 2076 -------------
 build/home.js                                      |    6 -
 en-us/blog/architecture-design.html                |  304 --
 en-us/blog/architecture-design.json                |    6 -
 en-us/blog/index.html                              |   27 -
 en-us/blog/meetup_2019_10_26.html                  |   40 -
 en-us/blog/meetup_2019_10_26.json                  |    6 -
 en-us/community/index.html                         |   27 -
 .../docs/developer_guide/architecture-design.html  |  304 --
 .../docs/developer_guide/architecture-design.json  |    6 -
 .../docs/developer_guide/backend-development.html  |   70 -
 .../docs/developer_guide/backend-development.json  |    6 -
 .../docs/developer_guide/frontend-development.html |  529 ----
 .../docs/developer_guide/frontend-development.json |    6 -
 en-us/docs/development/contribute.html             |   28 -
 en-us/docs/development/contribute.json             |    6 -
 en-us/docs/development/developers.html             |   28 -
 en-us/docs/development/developers.json             |    6 -
 en-us/docs/faq.html                                |  206 --
 en-us/docs/faq.json                                |    6 -
 en-us/docs/release/upgrade.html                    |   65 -
 en-us/docs/release/upgrade.json                    |    6 -
 en-us/docs/user_doc/backend-deployment.html        |  208 --
 en-us/docs/user_doc/backend-deployment.json        |    6 -
 en-us/docs/user_doc/frontend-deployment.html       |  114 -
 en-us/docs/user_doc/frontend-deployment.json       |    6 -
 en-us/docs/user_doc/quick-start.html               |   87 -
 en-us/docs/user_doc/quick-start.json               |    6 -
 en-us/docs/user_doc/system-manual.html             |  735 -----
 en-us/docs/user_doc/system-manual.json             |    6 -
 en-us/index.html                                   |    2 +-
 img/2019-10-26-discussion.jpg                      |  Bin 141780 -> 0 bytes
 img/2019-10-26-user.jpg                            |  Bin 249908 -> 0 bytes
 img/addtenant.png                                  |  Bin 15441 -> 0 bytes
 img/alibaba.png                                    |  Bin 221 -> 0 bytes
 img/alibaba_hover.png                              |  Bin 420 -> 0 bytes
 img/apachecon-na-2018.png                          |  Bin 243303 -> 0 bytes
 img/architecture.jpg                               |  Bin 124275 -> 0 bytes
 img/architecture.png                               |  Bin 14438 -> 0 bytes
 img/auth_project.png                               |  Bin 17445 -> 0 bytes
 img/auth_user.png                                  |  Bin 10254 -> 0 bytes
 img/brhtqqzh.jpeg                                  |  Bin 673545 -> 0 bytes
 img/complement.png                                 |  Bin 58442 -> 0 bytes
 img/create-queue.png                               |  Bin 254254 -> 0 bytes
 img/dag1.png                                       |  Bin 500407 -> 0 bytes
 img/dag2.png                                       |  Bin 343883 -> 0 bytes
 img/dag3.png                                       |  Bin 329032 -> 0 bytes
 img/dag4.png                                       |  Bin 24671 -> 0 bytes
 img/depend-node.png                                |  Bin 435609 -> 0 bytes
 img/depend-node2.png                               |  Bin 412944 -> 0 bytes
 img/depend-node3.png                               |  Bin 473875 -> 0 bytes
 img/dependent_edit.png                             |  Bin 65166 -> 0 bytes
 img/documents.png                                  |  Bin 255 -> 0 bytes
 img/ds_gray.png                                    |  Bin 2176 -> 0 bytes
 img/ds_gray.svg                                    |   99 -
 img/dubbo.ico                                      |  Bin 16958 -> 0 bytes
 img/dubbo_colorful.png                             |  Bin 17791 -> 0 bytes
 img/dubbo_gray.png                                 |  Bin 1309 -> 0 bytes
 img/dubbo_white.png                                |  Bin 6842 -> 0 bytes
 img/feature_hogh.png                               |  Bin 666 -> 0 bytes
 img/feature_loadbalances.png                       |  Bin 1055 -> 0 bytes
 img/feature_maintenance.png                        |  Bin 1105 -> 0 bytes
 img/feature_runtime.png                            |  Bin 1193 -> 0 bytes
 img/feature_service.png                            |  Bin 1125 -> 0 bytes
 img/feature_transpart.png                          |  Bin 1101 -> 0 bytes
 img/file-manage.png                                |  Bin 234978 -> 0 bytes
 img/file_create.png                                |  Bin 48006 -> 0 bytes
 img/file_detail.png                                |  Bin 169913 -> 0 bytes
 img/file_rename.png                                |  Bin 9581 -> 0 bytes
 img/file_upload.png                                |  Bin 14500 -> 0 bytes
 img/gant-pic.png                                   |  Bin 238924 -> 0 bytes
 img/global_parameter.png                           |  Bin 116141 -> 0 bytes
 img/hive_edit.png                                  |  Bin 46641 -> 0 bytes
 img/hive_edit2.png                                 |  Bin 48423 -> 0 bytes
 img/hive_kerberos.png                              |  Bin 37052 -> 0 bytes
 img/hlogo_colorful.png                             |  Bin 2176 -> 0 bytes
 img/hlogo_colorful.svg                             |   85 -
 img/hlogo_white.png                                |  Bin 2176 -> 0 bytes
 img/hlogo_white.svg                                |   99 -
 img/instance-detail.png                            |  Bin 333599 -> 0 bytes
 img/instance-list.png                              |  Bin 491317 -> 0 bytes
 img/issue.png                                      |  Bin 456 -> 0 bytes
 img/local_parameter.png                            |  Bin 25661 -> 0 bytes
 img/login.jpg                                      |  Bin 49053 -> 0 bytes
 img/mail_edit.png                                  |  Bin 14438 -> 0 bytes
 img/mailinglist.png                                |  Bin 641 -> 0 bytes
 img/mailinglist_hover.png                          |  Bin 688 -> 0 bytes
 img/master-jk.png                                  |  Bin 325435 -> 0 bytes
 img/meetup.png                                     |  Bin 711255 -> 0 bytes
 img/meetup_20191026.jpg                            |  Bin 148139 -> 0 bytes
 img/mr_edit.png                                    |  Bin 136183 -> 0 bytes
 img/mysql-jk.png                                   |  Bin 208525 -> 0 bytes
 img/mysql_edit.png                                 |  Bin 48390 -> 0 bytes
 img/postgresql_edit.png                            |  Bin 32368 -> 0 bytes
 img/procedure_edit.png                             |  Bin 89355 -> 0 bytes
 img/project.png                                    |  Bin 190310 -> 0 bytes
 img/pullrequest.png                                |  Bin 326 -> 0 bytes
 img/python_edit.png                                |  Bin 467741 -> 0 bytes
 img/quick_start.png                                |  Bin 28990 -> 0 bytes
 img/review_img4.jpg                                |  Bin 1792828 -> 0 bytes
 img/review_img4.png                                |  Bin 78543 -> 0 bytes
 img/run-work.png                                   |  Bin 43151 -> 0 bytes
 img/segmentfault.png                               |  Bin 2088 -> 0 bytes
 img/segmentfault_hover.png                         |  Bin 2842 -> 0 bytes
 img/shell_edit.png                                 |  Bin 157618 -> 0 bytes
 img/so-icon-hover.png                              |  Bin 720 -> 0 bytes
 img/so-icon.png                                    |  Bin 1460 -> 0 bytes
 img/spark_datesource.png                           |  Bin 29955 -> 0 bytes
 img/spark_edit.png                                 |  Bin 123946 -> 0 bytes
 img/sparksql_kerberos.png                          |  Bin 37390 -> 0 bytes
 img/sql-node.png                                   |  Bin 477610 -> 0 bytes
 img/sql-node2.png                                  |  Bin 505130 -> 0 bytes
 img/subprocess_edit.png                            |  Bin 76964 -> 0 bytes
 img/system/arrow_down.png                          |  Bin 534 -> 0 bytes
 img/system/arrow_right.png                         |  Bin 588 -> 0 bytes
 img/system/blog.png                                |  Bin 4239 -> 0 bytes
 img/system/community.png                           |  Bin 5279 -> 0 bytes
 img/system/docs.png                                |  Bin 4654 -> 0 bytes
 img/system/docs_hover.png                          |  Bin 214 -> 0 bytes
 img/system/docs_normal.png                         |  Bin 218 -> 0 bytes
 img/system/menu_gray.png                           |  Bin 224 -> 0 bytes
 img/system/menu_white.png                          |  Bin 215 -> 0 bytes
 img/system/next.png                                |  Bin 2947 -> 0 bytes
 img/system/prev.png                                |  Bin 2943 -> 0 bytes
 img/task-list.png                                  |  Bin 426472 -> 0 bytes
 img/task-log.png                                   |  Bin 302312 -> 0 bytes
 img/task-log2.png                                  |  Bin 334315 -> 0 bytes
 img/task_history.png                               |  Bin 109027 -> 0 bytes
 img/time-schedule.png                              |  Bin 55284 -> 0 bytes
 img/time-schedule2.png                             |  Bin 44594 -> 0 bytes
 img/twitter.png                                    |  Bin 991 -> 0 bytes
 img/twitter_hover.png                              |  Bin 913 -> 0 bytes
 img/udf_edit.png                                   |  Bin 26472 -> 0 bytes
 img/useredit2.png                                  |  Bin 17285 -> 0 bytes
 img/users_aisino.jpg                               |  Bin 44280 -> 0 bytes
 img/users_alibaba.png                              |  Bin 1710 -> 0 bytes
 img/users_banyunkeji.jpg                           |  Bin 19482 -> 0 bytes
 img/users_cttc.jpg                                 |  Bin 30098 -> 0 bytes
 img/users_danyuanzi.jpg                            |  Bin 23626 -> 0 bytes
 img/users_dida.jpg                                 |  Bin 36449 -> 0 bytes
 img/users_dongxinbeiyou.jpg                        |  Bin 31057 -> 0 bytes
 img/users_duodian.jpg                              |  Bin 38431 -> 0 bytes
 img/users_fenghuang.jpg                            |  Bin 38078 -> 0 bytes
 img/users_hualala.jpg                              |  Bin 30219 -> 0 bytes
 img/users_huanqiu.jpg                              |  Bin 26225 -> 0 bytes
 img/users_huarunwanjia.jpg                         |  Bin 40889 -> 0 bytes
 img/users_jiliguala.jpg                            |  Bin 26330 -> 0 bytes
 img/users_meituan.jpg                              |  Bin 23491 -> 0 bytes
 img/users_pingan.jpg                               |  Bin 40517 -> 0 bytes
 img/users_quanwai.jpg                              |  Bin 19711 -> 0 bytes
 img/users_shuidi.jpg                               |  Bin 22634 -> 0 bytes
 img/users_shulankeji.jpg                           |  Bin 34982 -> 0 bytes
 img/users_shulidata.jpg                            |  Bin 40690 -> 0 bytes
 img/users_sifangweiye.jpg                          |  Bin 35338 -> 0 bytes
 img/users_tianchuang.jpg                           |  Bin 33224 -> 0 bytes
 img/users_weimo.jpg                                |  Bin 29610 -> 0 bytes
 img/users_xiaobangguihua.jpg                       |  Bin 23553 -> 0 bytes
 img/users_xinweisulian.jpg                         |  Bin 19171 -> 0 bytes
 img/users_xueqiu.jpg                               |  Bin 42672 -> 0 bytes
 img/users_yiguan.jpg                               |  Bin 41485 -> 0 bytes
 img/users_yousukuaidi.jpg                          |  Bin 26050 -> 0 bytes
 img/users_yuxueyuan.jpg                            |  Bin 29126 -> 0 bytes
 img/users_zhongruanguoji.jpg                       |  Bin 38621 -> 0 bytes
 img/users_zhongshan.jpg                            |  Bin 36934 -> 0 bytes
 img/weibo.png                                      |  Bin 2572 -> 0 bytes
 img/weibo_hover.png                                |  Bin 6433 -> 0 bytes
 img/worker-jk.png                                  |  Bin 309276 -> 0 bytes
 img/worker1.png                                    |  Bin 253566 -> 0 bytes
 img/zk-jk.png                                      |  Bin 194588 -> 0 bytes
 zh-cn/blog/architecture-design.html                |  316 --
 zh-cn/blog/architecture-design.json                |    6 -
 zh-cn/blog/index.html                              |   27 -
 zh-cn/blog/meetup_2019_10_26.html                  |   40 -
 zh-cn/blog/meetup_2019_10_26.json                  |    6 -
 zh-cn/community/index.html                         |   27 -
 .../docs/developer_guide/architecture-design.html  |  316 --
 .../docs/developer_guide/architecture-design.json  |    6 -
 .../docs/developer_guide/backend-development.html  |   70 -
 .../docs/developer_guide/backend-development.json  |    6 -
 .../docs/developer_guide/frontend-development.html |  528 ----
 .../docs/developer_guide/frontend-development.json |    6 -
 zh-cn/docs/developer_guide/plugin-development.html |   81 -
 zh-cn/docs/developer_guide/plugin-development.json |    6 -
 zh-cn/docs/development/contribute.html             |   28 -
 zh-cn/docs/development/contribute.json             |    6 -
 zh-cn/docs/development/developers.html             |   28 -
 zh-cn/docs/development/developers.json             |    6 -
 zh-cn/docs/faq.html                                |  202 --
 zh-cn/docs/faq.json                                |    6 -
 zh-cn/docs/release/upgrade.html                    |   65 -
 zh-cn/docs/release/upgrade.json                    |    6 -
 zh-cn/docs/user_doc/backend-deployment.html        |  218 --
 zh-cn/docs/user_doc/backend-deployment.json        |    6 -
 zh-cn/docs/user_doc/frontend-deployment.html       |  114 -
 zh-cn/docs/user_doc/frontend-deployment.json       |    6 -
 zh-cn/docs/user_doc/quick-start.html               |   85 -
 zh-cn/docs/user_doc/quick-start.json               |    6 -
 zh-cn/docs/user_doc/system-manual.html             |  762 -----
 zh-cn/docs/user_doc/system-manual.json             |    6 -
 zh-cn/index.html                                   |   27 -
 208 files changed, 1 insertion(+), 18286 deletions(-)

diff --git a/build/blog.css b/build/blog.css
deleted file mode 100644
index 3213f20..0000000
--- a/build/blog.css
+++ /dev/null
@@ -1,1817 +0,0 @@
-.header-container {
-  position: fixed;
-  left: 0;
-  top: 0;
-  width: 100%;
-  z-index: 1000;
-  background-color: #fff; }
-  .header-container-primary {
-    background-color: transparent; }
-  .header-container-normal {
-    background-color: #fff;
-    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.08); }
-  .header-container .header-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 66px;
-    line-height: 66px; }
-    .header-container .header-body .logo {
-      margin-top: 10px;
-      margin-left: 40px;
-      width: 156px;
-      vertical-align: sub; }
-    .header-container .header-body .header-menu {
-      float: right; }
-      .header-container .header-body .header-menu .header-menu-toggle {
-        display: none;
-        width: 19px;
-        margin-right: 40px;
-        margin-top: 18px;
-        cursor: pointer; }
-    .header-container .header-body ul {
-      padding: 0;
-      margin: 0; }
-    .header-container .header-body li {
-      display: inline-block;
-      margin-right: 40px; }
-    .header-container .header-body .menu-item {
-      font-family: Avenir-Heavy;
-      font-size: 14px;
-      vertical-align: bottom; }
-    .header-container .header-body .menu-item-primary a {
-      color: #fff;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-primary:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-primary-active a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal a {
-      color: #333;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-normal:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal-active a {
-      opacity: 1; }
-    .header-container .header-body .language-switch {
-      float: right;
-      box-sizing: border-box;
-      width: 24px;
-      height: 24px;
-      line-height: 20px;
-      margin-top: 21px;
-      margin-right: 40px;
-      text-align: center;
-      border-radius: 2px;
-      cursor: pointer;
-      font-family: PingFangSC-Medium;
-      font-size: 14px;
-      opacity: 0.6; }
-      .header-container .header-body .language-switch:hover {
-        opacity: 1; }
-    .header-container .header-body .language-switch-primary {
-      border: 1px solid #FFF;
-      color: #FFF; }
-    .header-container .header-body .language-switch-normal {
-      border: 1px solid #333;
-      color: #333; }
-    .header-container .header-body .search {
-      float: right;
-      width: 24px;
-      height: 24px;
-      margin-top: 21px;
-      margin-right: 40px;
-      line-height: normal;
-      position: relative; }
-      .header-container .header-body .search .icon-search {
-        display: inline-block;
-        cursor: pointer;
-        width: 12px;
-        height: 12px;
-        border-radius: 50%;
-        border: 2px solid;
-        position: relative; }
-        .header-container .header-body .search .icon-search::before {
-          content: '';
-          transform: rotate(45deg);
-          width: 8px;
-          height: 2px;
-          position: absolute;
-          top: 13px;
-          left: 11px; }
-      .header-container .header-body .search-primary .icon-search {
-        border-color: #fff;
-        opacity: 0.6; }
-        .header-container .header-body .search-primary .icon-search::before {
-          background-color: #fff; }
-        .header-container .header-body .search-primary .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search-normal .icon-search {
-        border-color: #333;
-        opacity: 0.6; }
-        .header-container .header-body .search-normal .icon-search::before {
-          background-color: #333; }
-        .header-container .header-body .search-normal .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search .search-input {
-        position: absolute;
-        left: -172px;
-        top: 28px;
-        background: #fff;
-        border-radius: 4px;
-        overflow: hidden;
-        box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.05), 0 -8px 16px 0 rgba(0, 0, 0, 0.05); }
-        .header-container .header-body .search .search-input img {
-          width: 28px;
-          height: 28px;
-          cursor: pointer;
-          vertical-align: middle; }
-        .header-container .header-body .search .search-input input {
-          padding: 0 4px;
-          border: none;
-          outline: none;
-          width: 160px;
-          height: 24px;
-          vertical-align: middle; }
-
-@media screen and (max-width: 640px) {
-  .header-container .header-body .logo {
-    margin-left: 20px; }
-  .header-container .header-body .language-switch {
-    margin-right: 20px; }
-  .header-container .header-body .header-menu ul {
-    display: none; }
-  .header-container .header-body .header-menu .header-menu-toggle {
-    display: inline-block;
-    margin-right: 20px; }
-  .header-container .header-body .header-menu-open ul {
-    background-color: #f8f8f8;
-    display: inline-block;
-    position: absolute;
-    right: 0;
-    top: 66px;
-    z-index: 100; }
-  .header-container .header-body .header-menu-open li {
-    width: 200px;
-    display: list-item;
-    padding-left: 30px;
-    list-style: none;
-    line-height: 40px;
-    margin-right: 0; }
-    .header-container .header-body .header-menu-open li a {
-      color: #333;
-      display: inline-block;
-      width: 100%; }
-    .header-container .header-body .header-menu-open li:hover {
-      background: #41444C; }
-      .header-container .header-body .header-menu-open li:hover a {
-        color: #fff;
-        opacity: 1; }
-  .header-container .header-body .header-menu-open .menu-item-primary-active, .header-container .header-body .header-menu-open .menu-item-normal-active {
-    background: #41444C; }
-    .header-container .header-body .header-menu-open .menu-item-primary-active a, .header-container .header-body .header-menu-open .menu-item-normal-active a {
-      color: #fff;
-      opacity: 1; } }
-.bar {
-  margin-top: 66px;
-  background-image: linear-gradient(-90deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-  .bar .bar-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 200px;
-    line-height: 200px;
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #FFF;
-    position: relative; }
-    .bar .bar-body::before {
-      content: '';
-      height: 100%;
-      position: absolute;
-      left: 42px;
-      top: 0;
-      opacity: 0.3;
-      border-left: 1px solid #FFFFFF; }
-    .bar .bar-body::after {
-      content: '';
-      height: 16px;
-      position: absolute;
-      left: 40px;
-      top: 50%;
-      margin: auto 0;
-      border-left: 4px solid #FFFFFF; }
-    .bar .bar-body .front-img {
-      width: 80px;
-      height: 80px;
-      vertical-align: middle;
-      margin: 0 28px 0 70px; }
-    .bar .bar-body .back-img {
-      width: 160px;
-      height: 160px;
-      position: absolute;
-      right: 168px;
-      bottom: 0;
-      opacity: 0.15; }
-    @media screen and (max-width: 640px) {
-      .bar .bar-body::before {
-        left: 22px; }
-      .bar .bar-body::after {
-        left: 20px; }
-      .bar .bar-body .front-img {
-        margin-left: 50px; } }
-.page-slider {
-  overflow: hidden; }
-  .page-slider .slider-list {
-    overflow: visible; }
-    .page-slider .slider-list .slider-page {
-      overflow: hidden;
-      display: inline-block;
-      vertical-align: top; }
-  .page-slider .slider-control {
-    overflow: hidden; }
-    .page-slider .slider-control img {
-      display: inline-block;
-      width: 52px;
-      height: 52px;
-      cursor: pointer; }
-    .page-slider .slider-control .slider-control-prev {
-      float: left; }
-      .page-slider .slider-control .slider-control-prev-hidden {
-        display: none; }
-    .page-slider .slider-control .slider-control-next {
-      float: right; }
-      .page-slider .slider-control .slider-control-next-hidden {
-        display: none; }
-.blog-item {
-  box-sizing: border-box;
-  display: block;
-  width: 100%;
-  padding: 20px;
-  margin-bottom: 40px;
-  background: #F8F8F8; }
-  .blog-item .title img {
-    width: 16px;
-    height: 20px;
-    margin-right: 8px; }
-  .blog-item .title span {
-    font-family: Avenir-Heavy;
-    font-size: 20px;
-    color: #666666; }
-  .blog-item .brief-info {
-    padding: 12px 0 20px; }
-    .blog-item .brief-info .author {
-      font-family: Avenir-Heavy;
-      font-size: 14px;
-      color: #999;
-      margin-right: 8px; }
-    .blog-item .brief-info img {
-      width: 14px;
-      height: 14px; }
-    .blog-item .brief-info .date {
-      float: right;
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #999; }
-  .blog-item p {
-    font-family: Avenir-Medium;
-    font-size: 14px;
-    color: #666;
-    margin: 0; }
-  .blog-item:hover .title span {
-    color: #333; }
-  .blog-item:hover .brief-info .author {
-    color: #666; }
-.footer-container {
-  background: #F8F8F8; }
-  .footer-container .footer-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    box-sizing: border-box;
-    padding: 40px 40px 0; }
-    @media screen and (max-width: 640px) {
-      .footer-container .footer-body {
-        padding-left: 20px;
-        padding-right: 20px; } }
-    .footer-container .footer-body img {
-      width: 125px;
-      height: 56px;
-      margin-bottom: 10px;
-      vertical-align: middle; }
-    .footer-container .footer-body .cols-container {
-      margin-bottom: 60px; }
-      .footer-container .footer-body .cols-container .col {
-        display: inline-block;
-        box-sizing: border-box;
-        vertical-align: top; }
-      .footer-container .footer-body .cols-container .col-12 {
-        width: 50%;
-        padding-right: 125px; }
-      .footer-container .footer-body .cols-container .col-6 {
-        width: 25%; }
-      .footer-container .footer-body .cols-container h3 {
-        font-family: Avenir-Heavy;
-        font-size: 18px;
-        color: #333;
-        line-height: 18px;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container p {
-        font-family: Avenir-Medium;
-        font-size: 12px;
-        color: #999;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dl {
-        font-family: Avenir-Heavy;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dt {
-        font-weight: bold;
-        font-size: 18px;
-        color: #333;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container dd {
-        padding: 0;
-        margin: 0; }
-        .footer-container .footer-body .cols-container dd a {
-          text-decoration: none;
-          display: block;
-          font-size: 14px;
-          color: #999;
-          margin: 10px 0; }
-        .footer-container .footer-body .cols-container dd a:hover {
-          color: #2DACEC; }
-    .footer-container .footer-body .copyright {
-      border-top: 1px solid #ccc;
-      min-height: 60px;
-      line-height: 20px;
-      text-align: center;
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #999;
-      display: flex;
-      align-items: center; }
-      .footer-container .footer-body .copyright span {
-        display: inline-block;
-        margin: 0 auto; }
-
-@media screen and (max-width: 640px) {
-  .footer-container .footer-body .cols-container .col {
-    width: 100%;
-    text-align: center;
-    padding: 0; } }
-@charset "UTF-8";
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size10, .katex .sizing.reset-size2.size10 {
-  font-size: 3.55714286em; }
-
-.katex .fontsize-ensurer.reset-size3.size1, .katex .sizing.reset-size3.size1 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size3.size2, .katex .sizing.reset-size3.size2 {
-  font-size: .875em; }
-
-.katex .fontsize-ensurer.reset-size3.size3, .katex .sizing.reset-size3.size3 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size3.size4, .katex .sizing.reset-size3.size4 {
-  font-size: 1.125em; }
-
-.katex .fontsize-ensurer.reset-size3.size5, .katex .sizing.reset-size3.size5 {
-  font-size: 1.25em; }
-
-.katex .fontsize-ensurer.reset-size3.size6, .katex .sizing.reset-size3.size6 {
-  font-size: 1.5em; }
-
-.katex .fontsize-ensurer.reset-size3.size7, .katex .sizing.reset-size3.size7 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size3.size8, .katex .sizing.reset-size3.size8 {
-  font-size: 2.1625em; }
-
-.katex .fontsize-ensurer.reset-size3.size9, .katex .sizing.reset-size3.size9 {
-  font-size: 2.5875em; }
-
-.katex .fontsize-ensurer.reset-size3.size10, .katex .sizing.reset-size3.size10 {
-  font-size: 3.1125em; }
-
-.katex .fontsize-ensurer.reset-size4.size1, .katex .sizing.reset-size4.size1 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size4.size2, .katex .sizing.reset-size4.size2 {
-  font-size: .77777778em; }
-
-.katex .fontsize-ensurer.reset-size4.size3, .katex .sizing.reset-size4.size3 {
-  font-size: .88888889em; }
-
-.katex .fontsize-ensurer.reset-size4.size4, .katex .sizing.reset-size4.size4 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size4.size5, .katex .sizing.reset-size4.size5 {
-  font-size: 1.11111111em; }
-
-.katex .fontsize-ensurer.reset-size4.size6, .katex .sizing.reset-size4.size6 {
-  font-size: 1.33333333em; }
-
-.katex .fontsize-ensurer.reset-size4.size7, .katex .sizing.reset-size4.size7 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size4.size8, .katex .sizing.reset-size4.size8 {
-  font-size: 1.92222222em; }
-
-.katex .fontsize-ensurer.reset-size4.size9, .katex .sizing.reset-size4.size9 {
-  font-size: 2.3em; }
-
-.katex .fontsize-ensurer.reset-size4.size10, .katex .sizing.reset-size4.size10 {
-  font-size: 2.76666667em; }
-
-.katex .fontsize-ensurer.reset-size5.size1, .katex .sizing.reset-size5.size1 {
-  font-size: .5em; }
-
-.katex .fontsize-ensurer.reset-size5.size2, .katex .sizing.reset-size5.size2 {
-  font-size: .7em; }
-
-.katex .fontsize-ensurer.reset-size5.size3, .katex .sizing.reset-size5.size3 {
-  font-size: .8em; }
-
-.katex .fontsize-ensurer.reset-size5.size4, .katex .sizing.reset-size5.size4 {
-  font-size: .9em; }
-
-.katex .fontsize-ensurer.reset-size5.size5, .katex .sizing.reset-size5.size5 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size5.size6, .katex .sizing.reset-size5.size6 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size5.size7, .katex .sizing.reset-size5.size7 {
-  font-size: 1.44em; }
-
-.katex .fontsize-ensurer.reset-size5.size8, .katex .sizing.reset-size5.size8 {
-  font-size: 1.73em; }
-
-.katex .fontsize-ensurer.reset-size5.size9, .katex .sizing.reset-size5.size9 {
-  font-size: 2.07em; }
-
-.katex .fontsize-ensurer.reset-size5.size10, .katex .sizing.reset-size5.size10 {
-  font-size: 2.49em; }
-
-.katex .fontsize-ensurer.reset-size6.size1, .katex .sizing.reset-size6.size1 {
-  font-size: .41666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size2, .katex .sizing.reset-size6.size2 {
-  font-size: .58333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size3, .katex .sizing.reset-size6.size3 {
-  font-size: .66666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size4, .katex .sizing.reset-size6.size4 {
-  font-size: .75em; }
-
-.katex .fontsize-ensurer.reset-size6.size5, .katex .sizing.reset-size6.size5 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size6, .katex .sizing.reset-size6.size6 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size6.size7, .katex .sizing.reset-size6.size7 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size6.size8, .katex .sizing.reset-size6.size8 {
-  font-size: 1.44166667em; }
-
-.katex .fontsize-ensurer.reset-size6.size9, .katex .sizing.reset-size6.size9 {
-  font-size: 1.725em; }
-
-.katex .fontsize-ensurer.reset-size6.size10, .katex .sizing.reset-size6.size10 {
-  font-size: 2.075em; }
-
-.katex .fontsize-ensurer.reset-size7.size1, .katex .sizing.reset-size7.size1 {
-  font-size: .34722222em; }
-
-.katex .fontsize-ensurer.reset-size7.size2, .katex .sizing.reset-size7.size2 {
-  font-size: .48611111em; }
-
-.katex .fontsize-ensurer.reset-size7.size3, .katex .sizing.reset-size7.size3 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size7.size4, .katex .sizing.reset-size7.size4 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size7.size5, .katex .sizing.reset-size7.size5 {
-  font-size: .69444444em; }
-
-.katex .fontsize-ensurer.reset-size7.size6, .katex .sizing.reset-size7.size6 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size7.size7, .katex .sizing.reset-size7.size7 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size7.size8, .katex .sizing.reset-size7.size8 {
-  font-size: 1.20138889em; }
-
-.katex .fontsize-ensurer.reset-size7.size9, .katex .sizing.reset-size7.size9 {
-  font-size: 1.4375em; }
-
-.katex .fontsize-ensurer.reset-size7.size10, .katex .sizing.reset-size7.size10 {
-  font-size: 1.72916667em; }
-
-.katex .fontsize-ensurer.reset-size8.size1, .katex .sizing.reset-size8.size1 {
-  font-size: .28901734em; }
-
-.katex .fontsize-ensurer.reset-size8.size2, .katex .sizing.reset-size8.size2 {
-  font-size: .40462428em; }
-
-.katex .fontsize-ensurer.reset-size8.size3, .katex .sizing.reset-size8.size3 {
-  font-size: .46242775em; }
-
-.katex .fontsize-ensurer.reset-size8.size4, .katex .sizing.reset-size8.size4 {
-  font-size: .52023121em; }
-
-.katex .fontsize-ensurer.reset-size8.size5, .katex .sizing.reset-size8.size5 {
-  font-size: .57803468em; }
-
-.katex .fontsize-ensurer.reset-size8.size6, .katex .sizing.reset-size8.size6 {
-  font-size: .69364162em; }
-
-.katex .fontsize-ensurer.reset-size8.size7, .katex .sizing.reset-size8.size7 {
-  font-size: .83236994em; }
-
-.katex .fontsize-ensurer.reset-size8.size8, .katex .sizing.reset-size8.size8 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size8.size9, .katex .sizing.reset-size8.size9 {
-  font-size: 1.19653179em; }
-
-.katex .fontsize-ensurer.reset-size8.size10, .katex .sizing.reset-size8.size10 {
-  font-size: 1.43930636em; }
-
-.katex .fontsize-ensurer.reset-size9.size1, .katex .sizing.reset-size9.size1 {
-  font-size: .24154589em; }
-
-.katex .fontsize-ensurer.reset-size9.size2, .katex .sizing.reset-size9.size2 {
-  font-size: .33816425em; }
-
-.katex .fontsize-ensurer.reset-size9.size3, .katex .sizing.reset-size9.size3 {
-  font-size: .38647343em; }
-
-.katex .fontsize-ensurer.reset-size9.size4, .katex .sizing.reset-size9.size4 {
-  font-size: .43478261em; }
-
-.katex .fontsize-ensurer.reset-size9.size5, .katex .sizing.reset-size9.size5 {
-  font-size: .48309179em; }
-
-.katex .fontsize-ensurer.reset-size9.size6, .katex .sizing.reset-size9.size6 {
-  font-size: .57971014em; }
-
-.katex .fontsize-ensurer.reset-size9.size7, .katex .sizing.reset-size9.size7 {
-  font-size: .69565217em; }
-
-.katex .fontsize-ensurer.reset-size9.size8, .katex .sizing.reset-size9.size8 {
-  font-size: .83574879em; }
-
-.katex .fontsize-ensurer.reset-size9.size9, .katex .sizing.reset-size9.size9 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size9.size10, .katex .sizing.reset-size9.size10 {
-  font-size: 1.20289855em; }
-
-.katex .fontsize-ensurer.reset-size10.size1, .katex .sizing.reset-size10.size1 {
-  font-size: .20080321em; }
-
-.katex .fontsize-ensurer.reset-size10.size2, .katex .sizing.reset-size10.size2 {
-  font-size: .2811245em; }
-
-.katex .fontsize-ensurer.reset-size10.size3, .katex .sizing.reset-size10.size3 {
-  font-size: .32128514em; }
-
-.katex .fontsize-ensurer.reset-size10.size4, .katex .sizing.reset-size10.size4 {
-  font-size: .36144578em; }
-
-.katex .fontsize-ensurer.reset-size10.size5, .katex .sizing.reset-size10.size5 {
-  font-size: .40160643em; }
-
-.katex .fontsize-ensurer.reset-size10.size6, .katex .sizing.reset-size10.size6 {
-  font-size: .48192771em; }
-
-.katex .fontsize-ensurer.reset-size10.size7, .katex .sizing.reset-size10.size7 {
-  font-size: .57831325em; }
-
-.katex .fontsize-ensurer.reset-size10.size8, .katex .sizing.reset-size10.size8 {
-  font-size: .69477912em; }
-
-.katex .fontsize-ensurer.reset-size10.size9, .katex .sizing.reset-size10.size9 {
-  font-size: .8313253em; }
-
-.katex .fontsize-ensurer.reset-size10.size10, .katex .sizing.reset-size10.size10 {
-  font-size: 1em; }
-
-.katex .delimsizing.size1 {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.size2 {
-  font-family: KaTeX_Size2; }
-
-.katex .delimsizing.size3 {
-  font-family: KaTeX_Size3; }
-
-.katex .delimsizing.size4 {
-  font-family: KaTeX_Size4; }
-
-.katex .delimsizing.mult .delim-size1 > span {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.mult .delim-size4 > span {
-  font-family: KaTeX_Size4; }
-
-.katex .nulldelimiter {
-  display: inline-block;
-  width: .12em; }
-
-.katex .op-symbol {
-  position: relative; }
-
-.katex .op-symbol.small-op {
-  font-family: KaTeX_Size1; }
-
-.katex .op-symbol.large-op {
-  font-family: KaTeX_Size2; }
-
-.katex .accent > .vlist > span, .katex .op-limits > .vlist > span {
-  text-align: center; }
-
-.katex .accent .accent-body > span {
-  width: 0; }
-
-.katex .accent .accent-body.accent-vec > span {
-  position: relative;
-  left: .326em; }
-
-.katex .mtable .vertical-separator {
-  display: inline-block;
-  margin: 0 -.025em;
-  border-right: .05em solid #000; }
-
-.katex .mtable .arraycolsep {
-  display: inline-block; }
-
-.katex .mtable .col-align-c > .vlist {
-  text-align: center; }
-
-.katex .mtable .col-align-l > .vlist {
-  text-align: left; }
-
-.katex .mtable .col-align-r > .vlist {
-  text-align: right; }
-
-* {
-  padding: 0;
-  margin: 0; }
-
-a {
-  text-decoration: none; }
-
-h1, h2, h3, h4, h5, h6 {
-  font-weight: 400; }
-
-.blog-list-page .blog-container {
-  max-width: 1280px;
-  margin: 0 auto;
-  box-sizing: border-box;
-  padding: 50px 8% 80px; }
-  .blog-list-page .blog-container .col {
-    display: inline-block;
-    box-sizing: border-box; }
-    .blog-list-page .blog-container .col-18 {
-      width: 75%;
-      border-right: 1px solid #CBCCCD;
-      padding-right: 6%; }
-    .blog-list-page .blog-container .col-6 {
-      width: 25%;
-      padding-left: 20px;
-      vertical-align: top; }
-      .blog-list-page .blog-container .col-6 h4 {
-        font-family: Avenir-Heavy;
-        font-size: 18px;
-        color: #333;
-        margin: 0 0 20px; }
-      .blog-list-page .blog-container .col-6 ul {
-        list-style: none;
-        margin: 0;
-        padding: 0; }
-        .blog-list-page .blog-container .col-6 ul li {
-          width: 100%;
-          margin-bottom: 14px; }
-          .blog-list-page .blog-container .col-6 ul li span {
-            font-family: Avenir-Medium;
-            font-size: 12px;
-            color: #666; }
-  @media screen and (max-width: 640px) {
-    .blog-list-page .blog-container .left-part {
-      width: 100%;
-      border-right: none;
-      padding-right: 0; }
-    .blog-list-page .blog-container .right-part {
-      display: none; } }
diff --git a/build/blog.js b/build/blog.js
deleted file mode 100644
index 168126e..0000000
--- a/build/blog.js
+++ /dev/null
@@ -1,6 +0,0 @@
-!function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}var n={};t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,n,r){t.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:r})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="/build/",t(t.s=77) [...]
-  Copyright (c) 2017 Jed Watson.
-  Licensed under the MIT License (MIT), see
-  http://jedwatson.github.io/classnames
-*/
-!function(){"use strict";function n(){for(var e=[],t=0;t<arguments.length;t++){var r=arguments[t];if(r){var o=typeof r;if("string"===o||"number"===o)e.push(r);else if(Array.isArray(r)&&r.length){var a=n.apply(null,r);a&&e.push(a)}else if("object"===o)for(var u in r)i.call(r,u)&&r[u]&&e.push(u)}}return e.join(" ")}var i={}.hasOwnProperty;void 0!==e&&e.exports?(n.default=n,e.exports=n):(r=[],void 0!==(o=function(){return n}.apply(t,r))&&(e.exports=o))}()},function(e,t,n){"use strict";funct [...]
\ No newline at end of file
diff --git a/build/blogDetail.css b/build/blogDetail.css
deleted file mode 100644
index c4afa87..0000000
--- a/build/blogDetail.css
+++ /dev/null
@@ -1,3080 +0,0 @@
-.header-container {
-  position: fixed;
-  left: 0;
-  top: 0;
-  width: 100%;
-  z-index: 1000;
-  background-color: #fff; }
-  .header-container-primary {
-    background-color: transparent; }
-  .header-container-normal {
-    background-color: #fff;
-    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.08); }
-  .header-container .header-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 66px;
-    line-height: 66px; }
-    .header-container .header-body .logo {
-      margin-top: 10px;
-      margin-left: 40px;
-      width: 156px;
-      vertical-align: sub; }
-    .header-container .header-body .header-menu {
-      float: right; }
-      .header-container .header-body .header-menu .header-menu-toggle {
-        display: none;
-        width: 19px;
-        margin-right: 40px;
-        margin-top: 18px;
-        cursor: pointer; }
-    .header-container .header-body ul {
-      padding: 0;
-      margin: 0; }
-    .header-container .header-body li {
-      display: inline-block;
-      margin-right: 40px; }
-    .header-container .header-body .menu-item {
-      font-family: Avenir-Heavy;
-      font-size: 14px;
-      vertical-align: bottom; }
-    .header-container .header-body .menu-item-primary a {
-      color: #fff;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-primary:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-primary-active a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal a {
-      color: #333;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-normal:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal-active a {
-      opacity: 1; }
-    .header-container .header-body .language-switch {
-      float: right;
-      box-sizing: border-box;
-      width: 24px;
-      height: 24px;
-      line-height: 20px;
-      margin-top: 21px;
-      margin-right: 40px;
-      text-align: center;
-      border-radius: 2px;
-      cursor: pointer;
-      font-family: PingFangSC-Medium;
-      font-size: 14px;
-      opacity: 0.6; }
-      .header-container .header-body .language-switch:hover {
-        opacity: 1; }
-    .header-container .header-body .language-switch-primary {
-      border: 1px solid #FFF;
-      color: #FFF; }
-    .header-container .header-body .language-switch-normal {
-      border: 1px solid #333;
-      color: #333; }
-    .header-container .header-body .search {
-      float: right;
-      width: 24px;
-      height: 24px;
-      margin-top: 21px;
-      margin-right: 40px;
-      line-height: normal;
-      position: relative; }
-      .header-container .header-body .search .icon-search {
-        display: inline-block;
-        cursor: pointer;
-        width: 12px;
-        height: 12px;
-        border-radius: 50%;
-        border: 2px solid;
-        position: relative; }
-        .header-container .header-body .search .icon-search::before {
-          content: '';
-          transform: rotate(45deg);
-          width: 8px;
-          height: 2px;
-          position: absolute;
-          top: 13px;
-          left: 11px; }
-      .header-container .header-body .search-primary .icon-search {
-        border-color: #fff;
-        opacity: 0.6; }
-        .header-container .header-body .search-primary .icon-search::before {
-          background-color: #fff; }
-        .header-container .header-body .search-primary .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search-normal .icon-search {
-        border-color: #333;
-        opacity: 0.6; }
-        .header-container .header-body .search-normal .icon-search::before {
-          background-color: #333; }
-        .header-container .header-body .search-normal .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search .search-input {
-        position: absolute;
-        left: -172px;
-        top: 28px;
-        background: #fff;
-        border-radius: 4px;
-        overflow: hidden;
-        box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.05), 0 -8px 16px 0 rgba(0, 0, 0, 0.05); }
-        .header-container .header-body .search .search-input img {
-          width: 28px;
-          height: 28px;
-          cursor: pointer;
-          vertical-align: middle; }
-        .header-container .header-body .search .search-input input {
-          padding: 0 4px;
-          border: none;
-          outline: none;
-          width: 160px;
-          height: 24px;
-          vertical-align: middle; }
-
-@media screen and (max-width: 640px) {
-  .header-container .header-body .logo {
-    margin-left: 20px; }
-  .header-container .header-body .language-switch {
-    margin-right: 20px; }
-  .header-container .header-body .header-menu ul {
-    display: none; }
-  .header-container .header-body .header-menu .header-menu-toggle {
-    display: inline-block;
-    margin-right: 20px; }
-  .header-container .header-body .header-menu-open ul {
-    background-color: #f8f8f8;
-    display: inline-block;
-    position: absolute;
-    right: 0;
-    top: 66px;
-    z-index: 100; }
-  .header-container .header-body .header-menu-open li {
-    width: 200px;
-    display: list-item;
-    padding-left: 30px;
-    list-style: none;
-    line-height: 40px;
-    margin-right: 0; }
-    .header-container .header-body .header-menu-open li a {
-      color: #333;
-      display: inline-block;
-      width: 100%; }
-    .header-container .header-body .header-menu-open li:hover {
-      background: #41444C; }
-      .header-container .header-body .header-menu-open li:hover a {
-        color: #fff;
-        opacity: 1; }
-  .header-container .header-body .header-menu-open .menu-item-primary-active, .header-container .header-body .header-menu-open .menu-item-normal-active {
-    background: #41444C; }
-    .header-container .header-body .header-menu-open .menu-item-primary-active a, .header-container .header-body .header-menu-open .menu-item-normal-active a {
-      color: #fff;
-      opacity: 1; } }
-.footer-container {
-  background: #F8F8F8; }
-  .footer-container .footer-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    box-sizing: border-box;
-    padding: 40px 40px 0; }
-    @media screen and (max-width: 640px) {
-      .footer-container .footer-body {
-        padding-left: 20px;
-        padding-right: 20px; } }
-    .footer-container .footer-body img {
-      width: 125px;
-      height: 56px;
-      margin-bottom: 10px;
-      vertical-align: middle; }
-    .footer-container .footer-body .cols-container {
-      margin-bottom: 60px; }
-      .footer-container .footer-body .cols-container .col {
-        display: inline-block;
-        box-sizing: border-box;
-        vertical-align: top; }
-      .footer-container .footer-body .cols-container .col-12 {
-        width: 50%;
-        padding-right: 125px; }
-      .footer-container .footer-body .cols-container .col-6 {
-        width: 25%; }
-      .footer-container .footer-body .cols-container h3 {
-        font-family: Avenir-Heavy;
-        font-size: 18px;
-        color: #333;
-        line-height: 18px;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container p {
-        font-family: Avenir-Medium;
-        font-size: 12px;
-        color: #999;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dl {
-        font-family: Avenir-Heavy;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dt {
-        font-weight: bold;
-        font-size: 18px;
-        color: #333;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container dd {
-        padding: 0;
-        margin: 0; }
-        .footer-container .footer-body .cols-container dd a {
-          text-decoration: none;
-          display: block;
-          font-size: 14px;
-          color: #999;
-          margin: 10px 0; }
-        .footer-container .footer-body .cols-container dd a:hover {
-          color: #2DACEC; }
-    .footer-container .footer-body .copyright {
-      border-top: 1px solid #ccc;
-      min-height: 60px;
-      line-height: 20px;
-      text-align: center;
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #999;
-      display: flex;
-      align-items: center; }
-      .footer-container .footer-body .copyright span {
-        display: inline-block;
-        margin: 0 auto; }
-
-@media screen and (max-width: 640px) {
-  .footer-container .footer-body .cols-container .col {
-    width: 100%;
-    text-align: center;
-    padding: 0; } }
-@charset "UTF-8";
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size10, .katex .sizing.reset-size2.size10 {
-  font-size: 3.55714286em; }
-
-.katex .fontsize-ensurer.reset-size3.size1, .katex .sizing.reset-size3.size1 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size3.size2, .katex .sizing.reset-size3.size2 {
-  font-size: .875em; }
-
-.katex .fontsize-ensurer.reset-size3.size3, .katex .sizing.reset-size3.size3 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size3.size4, .katex .sizing.reset-size3.size4 {
-  font-size: 1.125em; }
-
-.katex .fontsize-ensurer.reset-size3.size5, .katex .sizing.reset-size3.size5 {
-  font-size: 1.25em; }
-
-.katex .fontsize-ensurer.reset-size3.size6, .katex .sizing.reset-size3.size6 {
-  font-size: 1.5em; }
-
-.katex .fontsize-ensurer.reset-size3.size7, .katex .sizing.reset-size3.size7 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size3.size8, .katex .sizing.reset-size3.size8 {
-  font-size: 2.1625em; }
-
-.katex .fontsize-ensurer.reset-size3.size9, .katex .sizing.reset-size3.size9 {
-  font-size: 2.5875em; }
-
-.katex .fontsize-ensurer.reset-size3.size10, .katex .sizing.reset-size3.size10 {
-  font-size: 3.1125em; }
-
-.katex .fontsize-ensurer.reset-size4.size1, .katex .sizing.reset-size4.size1 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size4.size2, .katex .sizing.reset-size4.size2 {
-  font-size: .77777778em; }
-
-.katex .fontsize-ensurer.reset-size4.size3, .katex .sizing.reset-size4.size3 {
-  font-size: .88888889em; }
-
-.katex .fontsize-ensurer.reset-size4.size4, .katex .sizing.reset-size4.size4 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size4.size5, .katex .sizing.reset-size4.size5 {
-  font-size: 1.11111111em; }
-
-.katex .fontsize-ensurer.reset-size4.size6, .katex .sizing.reset-size4.size6 {
-  font-size: 1.33333333em; }
-
-.katex .fontsize-ensurer.reset-size4.size7, .katex .sizing.reset-size4.size7 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size4.size8, .katex .sizing.reset-size4.size8 {
-  font-size: 1.92222222em; }
-
-.katex .fontsize-ensurer.reset-size4.size9, .katex .sizing.reset-size4.size9 {
-  font-size: 2.3em; }
-
-.katex .fontsize-ensurer.reset-size4.size10, .katex .sizing.reset-size4.size10 {
-  font-size: 2.76666667em; }
-
-.katex .fontsize-ensurer.reset-size5.size1, .katex .sizing.reset-size5.size1 {
-  font-size: .5em; }
-
-.katex .fontsize-ensurer.reset-size5.size2, .katex .sizing.reset-size5.size2 {
-  font-size: .7em; }
-
-.katex .fontsize-ensurer.reset-size5.size3, .katex .sizing.reset-size5.size3 {
-  font-size: .8em; }
-
-.katex .fontsize-ensurer.reset-size5.size4, .katex .sizing.reset-size5.size4 {
-  font-size: .9em; }
-
-.katex .fontsize-ensurer.reset-size5.size5, .katex .sizing.reset-size5.size5 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size5.size6, .katex .sizing.reset-size5.size6 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size5.size7, .katex .sizing.reset-size5.size7 {
-  font-size: 1.44em; }
-
-.katex .fontsize-ensurer.reset-size5.size8, .katex .sizing.reset-size5.size8 {
-  font-size: 1.73em; }
-
-.katex .fontsize-ensurer.reset-size5.size9, .katex .sizing.reset-size5.size9 {
-  font-size: 2.07em; }
-
-.katex .fontsize-ensurer.reset-size5.size10, .katex .sizing.reset-size5.size10 {
-  font-size: 2.49em; }
-
-.katex .fontsize-ensurer.reset-size6.size1, .katex .sizing.reset-size6.size1 {
-  font-size: .41666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size2, .katex .sizing.reset-size6.size2 {
-  font-size: .58333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size3, .katex .sizing.reset-size6.size3 {
-  font-size: .66666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size4, .katex .sizing.reset-size6.size4 {
-  font-size: .75em; }
-
-.katex .fontsize-ensurer.reset-size6.size5, .katex .sizing.reset-size6.size5 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size6, .katex .sizing.reset-size6.size6 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size6.size7, .katex .sizing.reset-size6.size7 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size6.size8, .katex .sizing.reset-size6.size8 {
-  font-size: 1.44166667em; }
-
-.katex .fontsize-ensurer.reset-size6.size9, .katex .sizing.reset-size6.size9 {
-  font-size: 1.725em; }
-
-.katex .fontsize-ensurer.reset-size6.size10, .katex .sizing.reset-size6.size10 {
-  font-size: 2.075em; }
-
-.katex .fontsize-ensurer.reset-size7.size1, .katex .sizing.reset-size7.size1 {
-  font-size: .34722222em; }
-
-.katex .fontsize-ensurer.reset-size7.size2, .katex .sizing.reset-size7.size2 {
-  font-size: .48611111em; }
-
-.katex .fontsize-ensurer.reset-size7.size3, .katex .sizing.reset-size7.size3 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size7.size4, .katex .sizing.reset-size7.size4 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size7.size5, .katex .sizing.reset-size7.size5 {
-  font-size: .69444444em; }
-
-.katex .fontsize-ensurer.reset-size7.size6, .katex .sizing.reset-size7.size6 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size7.size7, .katex .sizing.reset-size7.size7 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size7.size8, .katex .sizing.reset-size7.size8 {
-  font-size: 1.20138889em; }
-
-.katex .fontsize-ensurer.reset-size7.size9, .katex .sizing.reset-size7.size9 {
-  font-size: 1.4375em; }
-
-.katex .fontsize-ensurer.reset-size7.size10, .katex .sizing.reset-size7.size10 {
-  font-size: 1.72916667em; }
-
-.katex .fontsize-ensurer.reset-size8.size1, .katex .sizing.reset-size8.size1 {
-  font-size: .28901734em; }
-
-.katex .fontsize-ensurer.reset-size8.size2, .katex .sizing.reset-size8.size2 {
-  font-size: .40462428em; }
-
-.katex .fontsize-ensurer.reset-size8.size3, .katex .sizing.reset-size8.size3 {
-  font-size: .46242775em; }
-
-.katex .fontsize-ensurer.reset-size8.size4, .katex .sizing.reset-size8.size4 {
-  font-size: .52023121em; }
-
-.katex .fontsize-ensurer.reset-size8.size5, .katex .sizing.reset-size8.size5 {
-  font-size: .57803468em; }
-
-.katex .fontsize-ensurer.reset-size8.size6, .katex .sizing.reset-size8.size6 {
-  font-size: .69364162em; }
-
-.katex .fontsize-ensurer.reset-size8.size7, .katex .sizing.reset-size8.size7 {
-  font-size: .83236994em; }
-
-.katex .fontsize-ensurer.reset-size8.size8, .katex .sizing.reset-size8.size8 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size8.size9, .katex .sizing.reset-size8.size9 {
-  font-size: 1.19653179em; }
-
-.katex .fontsize-ensurer.reset-size8.size10, .katex .sizing.reset-size8.size10 {
-  font-size: 1.43930636em; }
-
-.katex .fontsize-ensurer.reset-size9.size1, .katex .sizing.reset-size9.size1 {
-  font-size: .24154589em; }
-
-.katex .fontsize-ensurer.reset-size9.size2, .katex .sizing.reset-size9.size2 {
-  font-size: .33816425em; }
-
-.katex .fontsize-ensurer.reset-size9.size3, .katex .sizing.reset-size9.size3 {
-  font-size: .38647343em; }
-
-.katex .fontsize-ensurer.reset-size9.size4, .katex .sizing.reset-size9.size4 {
-  font-size: .43478261em; }
-
-.katex .fontsize-ensurer.reset-size9.size5, .katex .sizing.reset-size9.size5 {
-  font-size: .48309179em; }
-
-.katex .fontsize-ensurer.reset-size9.size6, .katex .sizing.reset-size9.size6 {
-  font-size: .57971014em; }
-
-.katex .fontsize-ensurer.reset-size9.size7, .katex .sizing.reset-size9.size7 {
-  font-size: .69565217em; }
-
-.katex .fontsize-ensurer.reset-size9.size8, .katex .sizing.reset-size9.size8 {
-  font-size: .83574879em; }
-
-.katex .fontsize-ensurer.reset-size9.size9, .katex .sizing.reset-size9.size9 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size9.size10, .katex .sizing.reset-size9.size10 {
-  font-size: 1.20289855em; }
-
-.katex .fontsize-ensurer.reset-size10.size1, .katex .sizing.reset-size10.size1 {
-  font-size: .20080321em; }
-
-.katex .fontsize-ensurer.reset-size10.size2, .katex .sizing.reset-size10.size2 {
-  font-size: .2811245em; }
-
-.katex .fontsize-ensurer.reset-size10.size3, .katex .sizing.reset-size10.size3 {
-  font-size: .32128514em; }
-
-.katex .fontsize-ensurer.reset-size10.size4, .katex .sizing.reset-size10.size4 {
-  font-size: .36144578em; }
-
-.katex .fontsize-ensurer.reset-size10.size5, .katex .sizing.reset-size10.size5 {
-  font-size: .40160643em; }
-
-.katex .fontsize-ensurer.reset-size10.size6, .katex .sizing.reset-size10.size6 {
-  font-size: .48192771em; }
-
-.katex .fontsize-ensurer.reset-size10.size7, .katex .sizing.reset-size10.size7 {
-  font-size: .57831325em; }
-
-.katex .fontsize-ensurer.reset-size10.size8, .katex .sizing.reset-size10.size8 {
-  font-size: .69477912em; }
-
-.katex .fontsize-ensurer.reset-size10.size9, .katex .sizing.reset-size10.size9 {
-  font-size: .8313253em; }
-
-.katex .fontsize-ensurer.reset-size10.size10, .katex .sizing.reset-size10.size10 {
-  font-size: 1em; }
-
-.katex .delimsizing.size1 {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.size2 {
-  font-family: KaTeX_Size2; }
-
-.katex .delimsizing.size3 {
-  font-family: KaTeX_Size3; }
-
-.katex .delimsizing.size4 {
-  font-family: KaTeX_Size4; }
-
-.katex .delimsizing.mult .delim-size1 > span {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.mult .delim-size4 > span {
-  font-family: KaTeX_Size4; }
-
-.katex .nulldelimiter {
-  display: inline-block;
-  width: .12em; }
-
-.katex .op-symbol {
-  position: relative; }
-
-.katex .op-symbol.small-op {
-  font-family: KaTeX_Size1; }
-
-.katex .op-symbol.large-op {
-  font-family: KaTeX_Size2; }
-
-.katex .accent > .vlist > span, .katex .op-limits > .vlist > span {
-  text-align: center; }
-
-.katex .accent .accent-body > span {
-  width: 0; }
-
-.katex .accent .accent-body.accent-vec > span {
-  position: relative;
-  left: .326em; }
-
-.katex .mtable .vertical-separator {
-  display: inline-block;
-  margin: 0 -.025em;
-  border-right: .05em solid #000; }
-
-.katex .mtable .arraycolsep {
-  display: inline-block; }
-
-.katex .mtable .col-align-c > .vlist {
-  text-align: center; }
-
-.katex .mtable .col-align-l > .vlist {
-  text-align: left; }
-
-.katex .mtable .col-align-r > .vlist {
-  text-align: right; }
-
-* {
-  padding: 0;
-  margin: 0; }
-
-a {
-  text-decoration: none; }
-
-h1, h2, h3, h4, h5, h6 {
-  font-weight: 400; }
-
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size10, .katex .sizing.reset-size2.size10 {
-  font-size: 3.55714286em; }
-
-.katex .fontsize-ensurer.reset-size3.size1, .katex .sizing.reset-size3.size1 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size3.size2, .katex .sizing.reset-size3.size2 {
-  font-size: .875em; }
-
-.katex .fontsize-ensurer.reset-size3.size3, .katex .sizing.reset-size3.size3 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size3.size4, .katex .sizing.reset-size3.size4 {
-  font-size: 1.125em; }
-
-.katex .fontsize-ensurer.reset-size3.size5, .katex .sizing.reset-size3.size5 {
-  font-size: 1.25em; }
-
-.katex .fontsize-ensurer.reset-size3.size6, .katex .sizing.reset-size3.size6 {
-  font-size: 1.5em; }
-
-.katex .fontsize-ensurer.reset-size3.size7, .katex .sizing.reset-size3.size7 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size3.size8, .katex .sizing.reset-size3.size8 {
-  font-size: 2.1625em; }
-
-.katex .fontsize-ensurer.reset-size3.size9, .katex .sizing.reset-size3.size9 {
-  font-size: 2.5875em; }
-
-.katex .fontsize-ensurer.reset-size3.size10, .katex .sizing.reset-size3.size10 {
-  font-size: 3.1125em; }
-
-.katex .fontsize-ensurer.reset-size4.size1, .katex .sizing.reset-size4.size1 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size4.size2, .katex .sizing.reset-size4.size2 {
-  font-size: .77777778em; }
-
-.katex .fontsize-ensurer.reset-size4.size3, .katex .sizing.reset-size4.size3 {
-  font-size: .88888889em; }
-
-.katex .fontsize-ensurer.reset-size4.size4, .katex .sizing.reset-size4.size4 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size4.size5, .katex .sizing.reset-size4.size5 {
-  font-size: 1.11111111em; }
-
-.katex .fontsize-ensurer.reset-size4.size6, .katex .sizing.reset-size4.size6 {
-  font-size: 1.33333333em; }
-
-.katex .fontsize-ensurer.reset-size4.size7, .katex .sizing.reset-size4.size7 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size4.size8, .katex .sizing.reset-size4.size8 {
-  font-size: 1.92222222em; }
-
-.katex .fontsize-ensurer.reset-size4.size9, .katex .sizing.reset-size4.size9 {
-  font-size: 2.3em; }
-
-.katex .fontsize-ensurer.reset-size4.size10, .katex .sizing.reset-size4.size10 {
-  font-size: 2.76666667em; }
-
-.katex .fontsize-ensurer.reset-size5.size1, .katex .sizing.reset-size5.size1 {
-  font-size: .5em; }
-
-.katex .fontsize-ensurer.reset-size5.size2, .katex .sizing.reset-size5.size2 {
-  font-size: .7em; }
-
-.katex .fontsize-ensurer.reset-size5.size3, .katex .sizing.reset-size5.size3 {
-  font-size: .8em; }
-
-.katex .fontsize-ensurer.reset-size5.size4, .katex .sizing.reset-size5.size4 {
-  font-size: .9em; }
-
-.katex .fontsize-ensurer.reset-size5.size5, .katex .sizing.reset-size5.size5 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size5.size6, .katex .sizing.reset-size5.size6 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size5.size7, .katex .sizing.reset-size5.size7 {
-  font-size: 1.44em; }
-
-.katex .fontsize-ensurer.reset-size5.size8, .katex .sizing.reset-size5.size8 {
-  font-size: 1.73em; }
-
-.katex .fontsize-ensurer.reset-size5.size9, .katex .sizing.reset-size5.size9 {
-  font-size: 2.07em; }
-
-.katex .fontsize-ensurer.reset-size5.size10, .katex .sizing.reset-size5.size10 {
-  font-size: 2.49em; }
-
-.katex .fontsize-ensurer.reset-size6.size1, .katex .sizing.reset-size6.size1 {
-  font-size: .41666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size2, .katex .sizing.reset-size6.size2 {
-  font-size: .58333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size3, .katex .sizing.reset-size6.size3 {
-  font-size: .66666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size4, .katex .sizing.reset-size6.size4 {
-  font-size: .75em; }
-
-.katex .fontsize-ensurer.reset-size6.size5, .katex .sizing.reset-size6.size5 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size6, .katex .sizing.reset-size6.size6 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size6.size7, .katex .sizing.reset-size6.size7 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size6.size8, .katex .sizing.reset-size6.size8 {
-  font-size: 1.44166667em; }
-
-.katex .fontsize-ensurer.reset-size6.size9, .katex .sizing.reset-size6.size9 {
-  font-size: 1.725em; }
-
-.katex .fontsize-ensurer.reset-size6.size10, .katex .sizing.reset-size6.size10 {
-  font-size: 2.075em; }
-
-.katex .fontsize-ensurer.reset-size7.size1, .katex .sizing.reset-size7.size1 {
-  font-size: .34722222em; }
-
-.katex .fontsize-ensurer.reset-size7.size2, .katex .sizing.reset-size7.size2 {
-  font-size: .48611111em; }
-
-.katex .fontsize-ensurer.reset-size7.size3, .katex .sizing.reset-size7.size3 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size7.size4, .katex .sizing.reset-size7.size4 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size7.size5, .katex .sizing.reset-size7.size5 {
-  font-size: .69444444em; }
-
-.katex .fontsize-ensurer.reset-size7.size6, .katex .sizing.reset-size7.size6 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size7.size7, .katex .sizing.reset-size7.size7 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size7.size8, .katex .sizing.reset-size7.size8 {
-  font-size: 1.20138889em; }
-
-.katex .fontsize-ensurer.reset-size7.size9, .katex .sizing.reset-size7.size9 {
-  font-size: 1.4375em; }
-
-.katex .fontsize-ensurer.reset-size7.size10, .katex .sizing.reset-size7.size10 {
-  font-size: 1.72916667em; }
-
-.katex .fontsize-ensurer.reset-size8.size1, .katex .sizing.reset-size8.size1 {
-  font-size: .28901734em; }
-
-.katex .fontsize-ensurer.reset-size8.size2, .katex .sizing.reset-size8.size2 {
-  font-size: .40462428em; }
-
-.katex .fontsize-ensurer.reset-size8.size3, .katex .sizing.reset-size8.size3 {
-  font-size: .46242775em; }
-
-.katex .fontsize-ensurer.reset-size8.size4, .katex .sizing.reset-size8.size4 {
-  font-size: .52023121em; }
-
-.katex .fontsize-ensurer.reset-size8.size5, .katex .sizing.reset-size8.size5 {
-  font-size: .57803468em; }
-
-.katex .fontsize-ensurer.reset-size8.size6, .katex .sizing.reset-size8.size6 {
-  font-size: .69364162em; }
-
-.katex .fontsize-ensurer.reset-size8.size7, .katex .sizing.reset-size8.size7 {
-  font-size: .83236994em; }
-
-.katex .fontsize-ensurer.reset-size8.size8, .katex .sizing.reset-size8.size8 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size8.size9, .katex .sizing.reset-size8.size9 {
-  font-size: 1.19653179em; }
-
-.katex .fontsize-ensurer.reset-size8.size10, .katex .sizing.reset-size8.size10 {
-  font-size: 1.43930636em; }
-
-.katex .fontsize-ensurer.reset-size9.size1, .katex .sizing.reset-size9.size1 {
-  font-size: .24154589em; }
-
-.katex .fontsize-ensurer.reset-size9.size2, .katex .sizing.reset-size9.size2 {
-  font-size: .33816425em; }
-
-.katex .fontsize-ensurer.reset-size9.size3, .katex .sizing.reset-size9.size3 {
-  font-size: .38647343em; }
-
-.katex .fontsize-ensurer.reset-size9.size4, .katex .sizing.reset-size9.size4 {
-  font-size: .43478261em; }
-
-.katex .fontsize-ensurer.reset-size9.size5, .katex .sizing.reset-size9.size5 {
-  font-size: .48309179em; }
-
-.katex .fontsize-ensurer.reset-size9.size6, .katex .sizing.reset-size9.size6 {
-  font-size: .57971014em; }
-
-.katex .fontsize-ensurer.reset-size9.size7, .katex .sizing.reset-size9.size7 {
-  font-size: .69565217em; }
-
-.katex .fontsize-ensurer.reset-size9.size8, .katex .sizing.reset-size9.size8 {
-  font-size: .83574879em; }
-
-.katex .fontsize-ensurer.reset-size9.size9, .katex .sizing.reset-size9.size9 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size9.size10, .katex .sizing.reset-size9.size10 {
-  font-size: 1.20289855em; }
-
-.katex .fontsize-ensurer.reset-size10.size1, .katex .sizing.reset-size10.size1 {
-  font-size: .20080321em; }
-
-.katex .fontsize-ensurer.reset-size10.size2, .katex .sizing.reset-size10.size2 {
-  font-size: .2811245em; }
-
-.katex .fontsize-ensurer.reset-size10.size3, .katex .sizing.reset-size10.size3 {
-  font-size: .32128514em; }
-
-.katex .fontsize-ensurer.reset-size10.size4, .katex .sizing.reset-size10.size4 {
-  font-size: .36144578em; }
-
-.katex .fontsize-ensurer.reset-size10.size5, .katex .sizing.reset-size10.size5 {
-  font-size: .40160643em; }
-
-.katex .fontsize-ensurer.reset-size10.size6, .katex .sizing.reset-size10.size6 {
-  font-size: .48192771em; }
-
-.katex .fontsize-ensurer.reset-size10.size7, .katex .sizing.reset-size10.size7 {
-  font-size: .57831325em; }
-
-.katex .fontsize-ensurer.reset-size10.size8, .katex .sizing.reset-size10.size8 {
-  font-size: .69477912em; }
-
-.katex .fontsize-ensurer.reset-size10.size9, .katex .sizing.reset-size10.size9 {
-  font-size: .8313253em; }
-
-.katex .fontsize-ensurer.reset-size10.size10, .katex .sizing.reset-size10.size10 {
-  font-size: 1em; }
-
-.katex .delimsizing.size1 {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.size2 {
-  font-family: KaTeX_Size2; }
-
-.katex .delimsizing.size3 {
-  font-family: KaTeX_Size3; }
-
-.katex .delimsizing.size4 {
-  font-family: KaTeX_Size4; }
-
-.katex .delimsizing.mult .delim-size1 > span {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.mult .delim-size4 > span {
-  font-family: KaTeX_Size4; }
-
-.katex .nulldelimiter {
-  display: inline-block;
-  width: .12em; }
-
-.katex .op-symbol {
-  position: relative; }
-
-.katex .op-symbol.small-op {
-  font-family: KaTeX_Size1; }
-
-.katex .op-symbol.large-op {
-  font-family: KaTeX_Size2; }
-
-.katex .accent > .vlist > span, .katex .op-limits > .vlist > span {
-  text-align: center; }
-
-.katex .accent .accent-body > span {
-  width: 0; }
-
-.katex .accent .accent-body.accent-vec > span {
-  position: relative;
-  left: .326em; }
-
-.katex .mtable .vertical-separator {
-  display: inline-block;
-  margin: 0 -.025em;
-  border-right: .05em solid #000; }
-
-.katex .mtable .arraycolsep {
-  display: inline-block; }
-
-.katex .mtable .col-align-c > .vlist {
-  text-align: center; }
-
-.katex .mtable .col-align-l > .vlist {
-  text-align: left; }
-
-.katex .mtable .col-align-r > .vlist {
-  text-align: right; }
-
-.blog-detail-page .blog-content {
-  padding: 80px 20%;
-  margin: 66px auto 0;
-  max-width: 735px; }
diff --git a/build/blogDetail.js b/build/blogDetail.js
deleted file mode 100644
index 712efe1..0000000
--- a/build/blogDetail.js
+++ /dev/null
@@ -1,6 +0,0 @@
-!function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}var n={};t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,n,r){t.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:r})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="/build/",t(t.s=78) [...]
-  Copyright (c) 2017 Jed Watson.
-  Licensed under the MIT License (MIT), see
-  http://jedwatson.github.io/classnames
-*/
-!function(){"use strict";function n(){for(var e=[],t=0;t<arguments.length;t++){var r=arguments[t];if(r){var o=typeof r;if("string"===o||"number"===o)e.push(r);else if(Array.isArray(r)&&r.length){var a=n.apply(null,r);a&&e.push(a)}else if("object"===o)for(var u in r)i.call(r,u)&&r[u]&&e.push(u)}}return e.join(" ")}var i={}.hasOwnProperty;void 0!==e&&e.exports?(n.default=n,e.exports=n):(r=[],void 0!==(o=function(){return n}.apply(t,r))&&(e.exports=o))}()},function(e,t,n){"use strict";funct [...]
\ No newline at end of file
diff --git a/build/community.css b/build/community.css
deleted file mode 100644
index 1d52521..0000000
--- a/build/community.css
+++ /dev/null
@@ -1,1893 +0,0 @@
-.header-container {
-  position: fixed;
-  left: 0;
-  top: 0;
-  width: 100%;
-  z-index: 1000;
-  background-color: #fff; }
-  .header-container-primary {
-    background-color: transparent; }
-  .header-container-normal {
-    background-color: #fff;
-    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.08); }
-  .header-container .header-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 66px;
-    line-height: 66px; }
-    .header-container .header-body .logo {
-      margin-top: 10px;
-      margin-left: 40px;
-      width: 156px;
-      vertical-align: sub; }
-    .header-container .header-body .header-menu {
-      float: right; }
-      .header-container .header-body .header-menu .header-menu-toggle {
-        display: none;
-        width: 19px;
-        margin-right: 40px;
-        margin-top: 18px;
-        cursor: pointer; }
-    .header-container .header-body ul {
-      padding: 0;
-      margin: 0; }
-    .header-container .header-body li {
-      display: inline-block;
-      margin-right: 40px; }
-    .header-container .header-body .menu-item {
-      font-family: Avenir-Heavy;
-      font-size: 14px;
-      vertical-align: bottom; }
-    .header-container .header-body .menu-item-primary a {
-      color: #fff;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-primary:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-primary-active a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal a {
-      color: #333;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-normal:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal-active a {
-      opacity: 1; }
-    .header-container .header-body .language-switch {
-      float: right;
-      box-sizing: border-box;
-      width: 24px;
-      height: 24px;
-      line-height: 20px;
-      margin-top: 21px;
-      margin-right: 40px;
-      text-align: center;
-      border-radius: 2px;
-      cursor: pointer;
-      font-family: PingFangSC-Medium;
-      font-size: 14px;
-      opacity: 0.6; }
-      .header-container .header-body .language-switch:hover {
-        opacity: 1; }
-    .header-container .header-body .language-switch-primary {
-      border: 1px solid #FFF;
-      color: #FFF; }
-    .header-container .header-body .language-switch-normal {
-      border: 1px solid #333;
-      color: #333; }
-    .header-container .header-body .search {
-      float: right;
-      width: 24px;
-      height: 24px;
-      margin-top: 21px;
-      margin-right: 40px;
-      line-height: normal;
-      position: relative; }
-      .header-container .header-body .search .icon-search {
-        display: inline-block;
-        cursor: pointer;
-        width: 12px;
-        height: 12px;
-        border-radius: 50%;
-        border: 2px solid;
-        position: relative; }
-        .header-container .header-body .search .icon-search::before {
-          content: '';
-          transform: rotate(45deg);
-          width: 8px;
-          height: 2px;
-          position: absolute;
-          top: 13px;
-          left: 11px; }
-      .header-container .header-body .search-primary .icon-search {
-        border-color: #fff;
-        opacity: 0.6; }
-        .header-container .header-body .search-primary .icon-search::before {
-          background-color: #fff; }
-        .header-container .header-body .search-primary .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search-normal .icon-search {
-        border-color: #333;
-        opacity: 0.6; }
-        .header-container .header-body .search-normal .icon-search::before {
-          background-color: #333; }
-        .header-container .header-body .search-normal .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search .search-input {
-        position: absolute;
-        left: -172px;
-        top: 28px;
-        background: #fff;
-        border-radius: 4px;
-        overflow: hidden;
-        box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.05), 0 -8px 16px 0 rgba(0, 0, 0, 0.05); }
-        .header-container .header-body .search .search-input img {
-          width: 28px;
-          height: 28px;
-          cursor: pointer;
-          vertical-align: middle; }
-        .header-container .header-body .search .search-input input {
-          padding: 0 4px;
-          border: none;
-          outline: none;
-          width: 160px;
-          height: 24px;
-          vertical-align: middle; }
-
-@media screen and (max-width: 640px) {
-  .header-container .header-body .logo {
-    margin-left: 20px; }
-  .header-container .header-body .language-switch {
-    margin-right: 20px; }
-  .header-container .header-body .header-menu ul {
-    display: none; }
-  .header-container .header-body .header-menu .header-menu-toggle {
-    display: inline-block;
-    margin-right: 20px; }
-  .header-container .header-body .header-menu-open ul {
-    background-color: #f8f8f8;
-    display: inline-block;
-    position: absolute;
-    right: 0;
-    top: 66px;
-    z-index: 100; }
-  .header-container .header-body .header-menu-open li {
-    width: 200px;
-    display: list-item;
-    padding-left: 30px;
-    list-style: none;
-    line-height: 40px;
-    margin-right: 0; }
-    .header-container .header-body .header-menu-open li a {
-      color: #333;
-      display: inline-block;
-      width: 100%; }
-    .header-container .header-body .header-menu-open li:hover {
-      background: #41444C; }
-      .header-container .header-body .header-menu-open li:hover a {
-        color: #fff;
-        opacity: 1; }
-  .header-container .header-body .header-menu-open .menu-item-primary-active, .header-container .header-body .header-menu-open .menu-item-normal-active {
-    background: #41444C; }
-    .header-container .header-body .header-menu-open .menu-item-primary-active a, .header-container .header-body .header-menu-open .menu-item-normal-active a {
-      color: #fff;
-      opacity: 1; } }
-.bar {
-  margin-top: 66px;
-  background-image: linear-gradient(-90deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-  .bar .bar-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 200px;
-    line-height: 200px;
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #FFF;
-    position: relative; }
-    .bar .bar-body::before {
-      content: '';
-      height: 100%;
-      position: absolute;
-      left: 42px;
-      top: 0;
-      opacity: 0.3;
-      border-left: 1px solid #FFFFFF; }
-    .bar .bar-body::after {
-      content: '';
-      height: 16px;
-      position: absolute;
-      left: 40px;
-      top: 50%;
-      margin: auto 0;
-      border-left: 4px solid #FFFFFF; }
-    .bar .bar-body .front-img {
-      width: 80px;
-      height: 80px;
-      vertical-align: middle;
-      margin: 0 28px 0 70px; }
-    .bar .bar-body .back-img {
-      width: 160px;
-      height: 160px;
-      position: absolute;
-      right: 168px;
-      bottom: 0;
-      opacity: 0.15; }
-    @media screen and (max-width: 640px) {
-      .bar .bar-body::before {
-        left: 22px; }
-      .bar .bar-body::after {
-        left: 20px; }
-      .bar .bar-body .front-img {
-        margin-left: 50px; } }
-.footer-container {
-  background: #F8F8F8; }
-  .footer-container .footer-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    box-sizing: border-box;
-    padding: 40px 40px 0; }
-    @media screen and (max-width: 640px) {
-      .footer-container .footer-body {
-        padding-left: 20px;
-        padding-right: 20px; } }
-    .footer-container .footer-body img {
-      width: 125px;
-      height: 56px;
-      margin-bottom: 10px;
-      vertical-align: middle; }
-    .footer-container .footer-body .cols-container {
-      margin-bottom: 60px; }
-      .footer-container .footer-body .cols-container .col {
-        display: inline-block;
-        box-sizing: border-box;
-        vertical-align: top; }
-      .footer-container .footer-body .cols-container .col-12 {
-        width: 50%;
-        padding-right: 125px; }
-      .footer-container .footer-body .cols-container .col-6 {
-        width: 25%; }
-      .footer-container .footer-body .cols-container h3 {
-        font-family: Avenir-Heavy;
-        font-size: 18px;
-        color: #333;
-        line-height: 18px;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container p {
-        font-family: Avenir-Medium;
-        font-size: 12px;
-        color: #999;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dl {
-        font-family: Avenir-Heavy;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dt {
-        font-weight: bold;
-        font-size: 18px;
-        color: #333;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container dd {
-        padding: 0;
-        margin: 0; }
-        .footer-container .footer-body .cols-container dd a {
-          text-decoration: none;
-          display: block;
-          font-size: 14px;
-          color: #999;
-          margin: 10px 0; }
-        .footer-container .footer-body .cols-container dd a:hover {
-          color: #2DACEC; }
-    .footer-container .footer-body .copyright {
-      border-top: 1px solid #ccc;
-      min-height: 60px;
-      line-height: 20px;
-      text-align: center;
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #999;
-      display: flex;
-      align-items: center; }
-      .footer-container .footer-body .copyright span {
-        display: inline-block;
-        margin: 0 auto; }
-
-@media screen and (max-width: 640px) {
-  .footer-container .footer-body .cols-container .col {
-    width: 100%;
-    text-align: center;
-    padding: 0; } }
-.slider {
-  overflow: hidden; }
-  .slider .slider-list {
-    overflow: visible; }
-    .slider .slider-list .slider-screen {
-      display: inline-flex;
-      justify-content: space-around;
-      overflow: hidden; }
-  .slider .slider-control {
-    text-align: center;
-    margin-top: 20px; }
-    .slider .slider-control .slider-control-item {
-      cursor: pointer;
-      display: inline-block;
-      width: 20px;
-      height: 4px;
-      margin-right: 4px;
-      background: #ccc; }
-      .slider .slider-control .slider-control-item-active {
-        width: 40px;
-        height: 6px;
-        background-image: linear-gradient(-90deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-@charset "UTF-8";
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size10, .katex .sizing.reset-size2.size10 {
-  font-size: 3.55714286em; }
-
-.katex .fontsize-ensurer.reset-size3.size1, .katex .sizing.reset-size3.size1 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size3.size2, .katex .sizing.reset-size3.size2 {
-  font-size: .875em; }
-
-.katex .fontsize-ensurer.reset-size3.size3, .katex .sizing.reset-size3.size3 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size3.size4, .katex .sizing.reset-size3.size4 {
-  font-size: 1.125em; }
-
-.katex .fontsize-ensurer.reset-size3.size5, .katex .sizing.reset-size3.size5 {
-  font-size: 1.25em; }
-
-.katex .fontsize-ensurer.reset-size3.size6, .katex .sizing.reset-size3.size6 {
-  font-size: 1.5em; }
-
-.katex .fontsize-ensurer.reset-size3.size7, .katex .sizing.reset-size3.size7 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size3.size8, .katex .sizing.reset-size3.size8 {
-  font-size: 2.1625em; }
-
-.katex .fontsize-ensurer.reset-size3.size9, .katex .sizing.reset-size3.size9 {
-  font-size: 2.5875em; }
-
-.katex .fontsize-ensurer.reset-size3.size10, .katex .sizing.reset-size3.size10 {
-  font-size: 3.1125em; }
-
-.katex .fontsize-ensurer.reset-size4.size1, .katex .sizing.reset-size4.size1 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size4.size2, .katex .sizing.reset-size4.size2 {
-  font-size: .77777778em; }
-
-.katex .fontsize-ensurer.reset-size4.size3, .katex .sizing.reset-size4.size3 {
-  font-size: .88888889em; }
-
-.katex .fontsize-ensurer.reset-size4.size4, .katex .sizing.reset-size4.size4 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size4.size5, .katex .sizing.reset-size4.size5 {
-  font-size: 1.11111111em; }
-
-.katex .fontsize-ensurer.reset-size4.size6, .katex .sizing.reset-size4.size6 {
-  font-size: 1.33333333em; }
-
-.katex .fontsize-ensurer.reset-size4.size7, .katex .sizing.reset-size4.size7 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size4.size8, .katex .sizing.reset-size4.size8 {
-  font-size: 1.92222222em; }
-
-.katex .fontsize-ensurer.reset-size4.size9, .katex .sizing.reset-size4.size9 {
-  font-size: 2.3em; }
-
-.katex .fontsize-ensurer.reset-size4.size10, .katex .sizing.reset-size4.size10 {
-  font-size: 2.76666667em; }
-
-.katex .fontsize-ensurer.reset-size5.size1, .katex .sizing.reset-size5.size1 {
-  font-size: .5em; }
-
-.katex .fontsize-ensurer.reset-size5.size2, .katex .sizing.reset-size5.size2 {
-  font-size: .7em; }
-
-.katex .fontsize-ensurer.reset-size5.size3, .katex .sizing.reset-size5.size3 {
-  font-size: .8em; }
-
-.katex .fontsize-ensurer.reset-size5.size4, .katex .sizing.reset-size5.size4 {
-  font-size: .9em; }
-
-.katex .fontsize-ensurer.reset-size5.size5, .katex .sizing.reset-size5.size5 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size5.size6, .katex .sizing.reset-size5.size6 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size5.size7, .katex .sizing.reset-size5.size7 {
-  font-size: 1.44em; }
-
-.katex .fontsize-ensurer.reset-size5.size8, .katex .sizing.reset-size5.size8 {
-  font-size: 1.73em; }
-
-.katex .fontsize-ensurer.reset-size5.size9, .katex .sizing.reset-size5.size9 {
-  font-size: 2.07em; }
-
-.katex .fontsize-ensurer.reset-size5.size10, .katex .sizing.reset-size5.size10 {
-  font-size: 2.49em; }
-
-.katex .fontsize-ensurer.reset-size6.size1, .katex .sizing.reset-size6.size1 {
-  font-size: .41666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size2, .katex .sizing.reset-size6.size2 {
-  font-size: .58333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size3, .katex .sizing.reset-size6.size3 {
-  font-size: .66666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size4, .katex .sizing.reset-size6.size4 {
-  font-size: .75em; }
-
-.katex .fontsize-ensurer.reset-size6.size5, .katex .sizing.reset-size6.size5 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size6, .katex .sizing.reset-size6.size6 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size6.size7, .katex .sizing.reset-size6.size7 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size6.size8, .katex .sizing.reset-size6.size8 {
-  font-size: 1.44166667em; }
-
-.katex .fontsize-ensurer.reset-size6.size9, .katex .sizing.reset-size6.size9 {
-  font-size: 1.725em; }
-
-.katex .fontsize-ensurer.reset-size6.size10, .katex .sizing.reset-size6.size10 {
-  font-size: 2.075em; }
-
-.katex .fontsize-ensurer.reset-size7.size1, .katex .sizing.reset-size7.size1 {
-  font-size: .34722222em; }
-
-.katex .fontsize-ensurer.reset-size7.size2, .katex .sizing.reset-size7.size2 {
-  font-size: .48611111em; }
-
-.katex .fontsize-ensurer.reset-size7.size3, .katex .sizing.reset-size7.size3 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size7.size4, .katex .sizing.reset-size7.size4 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size7.size5, .katex .sizing.reset-size7.size5 {
-  font-size: .69444444em; }
-
-.katex .fontsize-ensurer.reset-size7.size6, .katex .sizing.reset-size7.size6 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size7.size7, .katex .sizing.reset-size7.size7 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size7.size8, .katex .sizing.reset-size7.size8 {
-  font-size: 1.20138889em; }
-
-.katex .fontsize-ensurer.reset-size7.size9, .katex .sizing.reset-size7.size9 {
-  font-size: 1.4375em; }
-
-.katex .fontsize-ensurer.reset-size7.size10, .katex .sizing.reset-size7.size10 {
-  font-size: 1.72916667em; }
-
-.katex .fontsize-ensurer.reset-size8.size1, .katex .sizing.reset-size8.size1 {
-  font-size: .28901734em; }
-
-.katex .fontsize-ensurer.reset-size8.size2, .katex .sizing.reset-size8.size2 {
-  font-size: .40462428em; }
-
-.katex .fontsize-ensurer.reset-size8.size3, .katex .sizing.reset-size8.size3 {
-  font-size: .46242775em; }
-
-.katex .fontsize-ensurer.reset-size8.size4, .katex .sizing.reset-size8.size4 {
-  font-size: .52023121em; }
-
-.katex .fontsize-ensurer.reset-size8.size5, .katex .sizing.reset-size8.size5 {
-  font-size: .57803468em; }
-
-.katex .fontsize-ensurer.reset-size8.size6, .katex .sizing.reset-size8.size6 {
-  font-size: .69364162em; }
-
-.katex .fontsize-ensurer.reset-size8.size7, .katex .sizing.reset-size8.size7 {
-  font-size: .83236994em; }
-
-.katex .fontsize-ensurer.reset-size8.size8, .katex .sizing.reset-size8.size8 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size8.size9, .katex .sizing.reset-size8.size9 {
-  font-size: 1.19653179em; }
-
-.katex .fontsize-ensurer.reset-size8.size10, .katex .sizing.reset-size8.size10 {
-  font-size: 1.43930636em; }
-
-.katex .fontsize-ensurer.reset-size9.size1, .katex .sizing.reset-size9.size1 {
-  font-size: .24154589em; }
-
-.katex .fontsize-ensurer.reset-size9.size2, .katex .sizing.reset-size9.size2 {
-  font-size: .33816425em; }
-
-.katex .fontsize-ensurer.reset-size9.size3, .katex .sizing.reset-size9.size3 {
-  font-size: .38647343em; }
-
-.katex .fontsize-ensurer.reset-size9.size4, .katex .sizing.reset-size9.size4 {
-  font-size: .43478261em; }
-
-.katex .fontsize-ensurer.reset-size9.size5, .katex .sizing.reset-size9.size5 {
-  font-size: .48309179em; }
-
-.katex .fontsize-ensurer.reset-size9.size6, .katex .sizing.reset-size9.size6 {
-  font-size: .57971014em; }
-
-.katex .fontsize-ensurer.reset-size9.size7, .katex .sizing.reset-size9.size7 {
-  font-size: .69565217em; }
-
-.katex .fontsize-ensurer.reset-size9.size8, .katex .sizing.reset-size9.size8 {
-  font-size: .83574879em; }
-
-.katex .fontsize-ensurer.reset-size9.size9, .katex .sizing.reset-size9.size9 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size9.size10, .katex .sizing.reset-size9.size10 {
-  font-size: 1.20289855em; }
-
-.katex .fontsize-ensurer.reset-size10.size1, .katex .sizing.reset-size10.size1 {
-  font-size: .20080321em; }
-
-.katex .fontsize-ensurer.reset-size10.size2, .katex .sizing.reset-size10.size2 {
-  font-size: .2811245em; }
-
-.katex .fontsize-ensurer.reset-size10.size3, .katex .sizing.reset-size10.size3 {
-  font-size: .32128514em; }
-
-.katex .fontsize-ensurer.reset-size10.size4, .katex .sizing.reset-size10.size4 {
-  font-size: .36144578em; }
-
-.katex .fontsize-ensurer.reset-size10.size5, .katex .sizing.reset-size10.size5 {
-  font-size: .40160643em; }
-
-.katex .fontsize-ensurer.reset-size10.size6, .katex .sizing.reset-size10.size6 {
-  font-size: .48192771em; }
-
-.katex .fontsize-ensurer.reset-size10.size7, .katex .sizing.reset-size10.size7 {
-  font-size: .57831325em; }
-
-.katex .fontsize-ensurer.reset-size10.size8, .katex .sizing.reset-size10.size8 {
-  font-size: .69477912em; }
-
-.katex .fontsize-ensurer.reset-size10.size9, .katex .sizing.reset-size10.size9 {
-  font-size: .8313253em; }
-
-.katex .fontsize-ensurer.reset-size10.size10, .katex .sizing.reset-size10.size10 {
-  font-size: 1em; }
-
-.katex .delimsizing.size1 {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.size2 {
-  font-family: KaTeX_Size2; }
-
-.katex .delimsizing.size3 {
-  font-family: KaTeX_Size3; }
-
-.katex .delimsizing.size4 {
-  font-family: KaTeX_Size4; }
-
-.katex .delimsizing.mult .delim-size1 > span {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.mult .delim-size4 > span {
-  font-family: KaTeX_Size4; }
-
-.katex .nulldelimiter {
-  display: inline-block;
-  width: .12em; }
-
-.katex .op-symbol {
-  position: relative; }
-
-.katex .op-symbol.small-op {
-  font-family: KaTeX_Size1; }
-
-.katex .op-symbol.large-op {
-  font-family: KaTeX_Size2; }
-
-.katex .accent > .vlist > span, .katex .op-limits > .vlist > span {
-  text-align: center; }
-
-.katex .accent .accent-body > span {
-  width: 0; }
-
-.katex .accent .accent-body.accent-vec > span {
-  position: relative;
-  left: .326em; }
-
-.katex .mtable .vertical-separator {
-  display: inline-block;
-  margin: 0 -.025em;
-  border-right: .05em solid #000; }
-
-.katex .mtable .arraycolsep {
-  display: inline-block; }
-
-.katex .mtable .col-align-c > .vlist {
-  text-align: center; }
-
-.katex .mtable .col-align-l > .vlist {
-  text-align: left; }
-
-.katex .mtable .col-align-r > .vlist {
-  text-align: right; }
-
-* {
-  padding: 0;
-  margin: 0; }
-
-a {
-  text-decoration: none; }
-
-h1, h2, h3, h4, h5, h6 {
-  font-weight: 400; }
-
-.community-page .events-section {
-  max-width: 1280px;
-  margin: 0 auto;
-  box-sizing: border-box;
-  padding: 80px 40px 60px; }
-  @media screen and (max-width: 640px) {
-    .community-page .events-section {
-      padding: 0; } }
-  .community-page .events-section h3 {
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #333;
-    text-align: center;
-    margin: 0 0 40px; }
-  .community-page .events-section .event-card {
-    width: 373px;
-    font-size: 0; }
-    .community-page .events-section .event-card img {
-      width: 373px;
-      height: 209px; }
-    @media screen and (max-width: 320px) {
-      .community-page .events-section .event-card {
-        width: 320px; }
-        .community-page .events-section .event-card img {
-          width: 320px;
-          height: 179px; } }
-    .community-page .events-section .event-card .event-introduction {
-      padding: 20px;
-      background: #F8F8F8; }
-      .community-page .events-section .event-card .event-introduction h4 {
-        font-family: Avenir-Heavy;
-        font-size: 20px;
-        color: #333;
-        margin: 0 0 10px; }
-      .community-page .events-section .event-card .event-introduction p {
-        font-family: Avenir-Medium;
-        font-size: 14px;
-        color: #666;
-        margin: 0; }
-      .community-page .events-section .event-card .event-introduction a {
-        display: inline-block;
-        width: 100%;
-        font-family: Avenir-Medium;
-        font-size: 12px;
-        color: #999;
-        margin-top: 10px; }
-        .community-page .events-section .event-card .event-introduction a .arrow {
-          width: 8px;
-          height: 13px;
-          float: right; }
-
-.community-page .contact-section {
-  max-width: 1280px;
-  margin: 0 auto;
-  box-sizing: border-box;
-  padding: 60px 40px 40px; }
-  @media screen and (max-width: 640px) {
-    .community-page .contact-section {
-      padding-left: 20px;
-      padding-right: 20px; } }
-  .community-page .contact-section h3 {
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #333;
-    text-align: center;
-    margin: 0 0 12px; }
-  .community-page .contact-section p {
-    font-family: Avenir-Medium;
-    font-size: 14px;
-    color: #666;
-    text-align: center;
-    margin: 0 0 40px; }
-  .community-page .contact-section .contact-list {
-    display: flex;
-    justify-content: space-around;
-    flex-wrap: wrap; }
-    .community-page .contact-section .contact-list .contact-item {
-      display: inline-block;
-      text-align: center;
-      padding: 0 20px;
-      font-family: Avenir-Heavy;
-      font-size: 18px;
-      color: #999; }
-      .community-page .contact-section .contact-list .contact-item:hover {
-        color: #2DACEC; }
-      .community-page .contact-section .contact-list .contact-item img {
-        width: 82px;
-        height: 86px; }
-
-.community-page .contributor-section {
-  max-width: 1280px;
-  margin: 0 auto;
-  box-sizing: border-box;
-  padding: 60px 40px 40px; }
-  .community-page .contributor-section h3 {
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #333;
-    text-align: center;
-    margin: 0 0 12px; }
-  .community-page .contributor-section p {
-    font-family: Avenir-Medium;
-    font-size: 14px;
-    color: #666;
-    text-align: center;
-    margin: 0 0 40px; }
-  .community-page .contributor-section .contributor-list {
-    display: flex;
-    justify-content: space-around;
-    flex-wrap: wrap; }
-    .community-page .contributor-section .contributor-list .contributor-item {
-      display: inline-block;
-      width: 240px;
-      text-align: center;
-      font-family: Avenir-Heavy;
-      font-size: 18px;
-      color: #999; }
-      .community-page .contributor-section .contributor-list .contributor-item img {
-        width: 82px;
-        height: 86px; }
-
-.community-page .eco-section {
-  padding: 60px 20% 0;
-  max-width: 735px;
-  margin: 0 auto; }
-  .community-page .eco-section h3 {
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #333;
-    text-align: center;
-    margin-bottom: 12px; }
-  .community-page .eco-section .eco-item {
-    margin-bottom: 30px; }
-    .community-page .eco-section .eco-item h4 {
-      font-family: Avenir-Heavy;
-      font-size: 18px;
-      color: #333;
-      margin: 0 0 10px; }
-    .community-page .eco-section .eco-item p {
-      font-family: Avenir-Medium;
-      font-size: 14px;
-      color: #666;
-      text-align: justify;
-      margin: 12px 0; }
-    .community-page .eco-section .eco-item .tags a {
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #fff;
-      display: inline-block;
-      height: 32px;
-      line-height: 32px;
-      padding: 0 16px;
-      border-radius: 2px;
-      text-align: center;
-      margin: 0 10px 10px 0; }
diff --git a/build/community.js b/build/community.js
deleted file mode 100644
index f4631e1..0000000
--- a/build/community.js
+++ /dev/null
@@ -1,6 +0,0 @@
-!function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}var n={};t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,n,r){t.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:r})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="/build/",t(t.s=79) [...]
-  Copyright (c) 2017 Jed Watson.
-  Licensed under the MIT License (MIT), see
-  http://jedwatson.github.io/classnames
-*/
-!function(){"use strict";function n(){for(var e=[],t=0;t<arguments.length;t++){var r=arguments[t];if(r){var o=typeof r;if("string"===o||"number"===o)e.push(r);else if(Array.isArray(r)&&r.length){var a=n.apply(null,r);a&&e.push(a)}else if("object"===o)for(var u in r)i.call(r,u)&&r[u]&&e.push(u)}}return e.join(" ")}var i={}.hasOwnProperty;void 0!==e&&e.exports?(n.default=n,e.exports=n):(r=[],void 0!==(o=function(){return n}.apply(t,r))&&(e.exports=o))}()},function(e,t,n){"use strict";funct [...]
\ No newline at end of file
diff --git a/build/documentation.css b/build/documentation.css
deleted file mode 100644
index ce19f7d..0000000
--- a/build/documentation.css
+++ /dev/null
@@ -1,3238 +0,0 @@
-.header-container {
-  position: fixed;
-  left: 0;
-  top: 0;
-  width: 100%;
-  z-index: 1000;
-  background-color: #fff; }
-  .header-container-primary {
-    background-color: transparent; }
-  .header-container-normal {
-    background-color: #fff;
-    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.08); }
-  .header-container .header-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 66px;
-    line-height: 66px; }
-    .header-container .header-body .logo {
-      margin-top: 10px;
-      margin-left: 40px;
-      width: 156px;
-      vertical-align: sub; }
-    .header-container .header-body .header-menu {
-      float: right; }
-      .header-container .header-body .header-menu .header-menu-toggle {
-        display: none;
-        width: 19px;
-        margin-right: 40px;
-        margin-top: 18px;
-        cursor: pointer; }
-    .header-container .header-body ul {
-      padding: 0;
-      margin: 0; }
-    .header-container .header-body li {
-      display: inline-block;
-      margin-right: 40px; }
-    .header-container .header-body .menu-item {
-      font-family: Avenir-Heavy;
-      font-size: 14px;
-      vertical-align: bottom; }
-    .header-container .header-body .menu-item-primary a {
-      color: #fff;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-primary:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-primary-active a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal a {
-      color: #333;
-      opacity: 0.6;
-      font-family: Avenir-Medium; }
-    .header-container .header-body .menu-item-normal:hover a {
-      opacity: 1; }
-    .header-container .header-body .menu-item-normal-active a {
-      opacity: 1; }
-    .header-container .header-body .language-switch {
-      float: right;
-      box-sizing: border-box;
-      width: 24px;
-      height: 24px;
-      line-height: 20px;
-      margin-top: 21px;
-      margin-right: 40px;
-      text-align: center;
-      border-radius: 2px;
-      cursor: pointer;
-      font-family: PingFangSC-Medium;
-      font-size: 14px;
-      opacity: 0.6; }
-      .header-container .header-body .language-switch:hover {
-        opacity: 1; }
-    .header-container .header-body .language-switch-primary {
-      border: 1px solid #FFF;
-      color: #FFF; }
-    .header-container .header-body .language-switch-normal {
-      border: 1px solid #333;
-      color: #333; }
-    .header-container .header-body .search {
-      float: right;
-      width: 24px;
-      height: 24px;
-      margin-top: 21px;
-      margin-right: 40px;
-      line-height: normal;
-      position: relative; }
-      .header-container .header-body .search .icon-search {
-        display: inline-block;
-        cursor: pointer;
-        width: 12px;
-        height: 12px;
-        border-radius: 50%;
-        border: 2px solid;
-        position: relative; }
-        .header-container .header-body .search .icon-search::before {
-          content: '';
-          transform: rotate(45deg);
-          width: 8px;
-          height: 2px;
-          position: absolute;
-          top: 13px;
-          left: 11px; }
-      .header-container .header-body .search-primary .icon-search {
-        border-color: #fff;
-        opacity: 0.6; }
-        .header-container .header-body .search-primary .icon-search::before {
-          background-color: #fff; }
-        .header-container .header-body .search-primary .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search-normal .icon-search {
-        border-color: #333;
-        opacity: 0.6; }
-        .header-container .header-body .search-normal .icon-search::before {
-          background-color: #333; }
-        .header-container .header-body .search-normal .icon-search:hover {
-          opacity: 1; }
-      .header-container .header-body .search .search-input {
-        position: absolute;
-        left: -172px;
-        top: 28px;
-        background: #fff;
-        border-radius: 4px;
-        overflow: hidden;
-        box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.05), 0 -8px 16px 0 rgba(0, 0, 0, 0.05); }
-        .header-container .header-body .search .search-input img {
-          width: 28px;
-          height: 28px;
-          cursor: pointer;
-          vertical-align: middle; }
-        .header-container .header-body .search .search-input input {
-          padding: 0 4px;
-          border: none;
-          outline: none;
-          width: 160px;
-          height: 24px;
-          vertical-align: middle; }
-
-@media screen and (max-width: 640px) {
-  .header-container .header-body .logo {
-    margin-left: 20px; }
-  .header-container .header-body .language-switch {
-    margin-right: 20px; }
-  .header-container .header-body .header-menu ul {
-    display: none; }
-  .header-container .header-body .header-menu .header-menu-toggle {
-    display: inline-block;
-    margin-right: 20px; }
-  .header-container .header-body .header-menu-open ul {
-    background-color: #f8f8f8;
-    display: inline-block;
-    position: absolute;
-    right: 0;
-    top: 66px;
-    z-index: 100; }
-  .header-container .header-body .header-menu-open li {
-    width: 200px;
-    display: list-item;
-    padding-left: 30px;
-    list-style: none;
-    line-height: 40px;
-    margin-right: 0; }
-    .header-container .header-body .header-menu-open li a {
-      color: #333;
-      display: inline-block;
-      width: 100%; }
-    .header-container .header-body .header-menu-open li:hover {
-      background: #41444C; }
-      .header-container .header-body .header-menu-open li:hover a {
-        color: #fff;
-        opacity: 1; }
-  .header-container .header-body .header-menu-open .menu-item-primary-active, .header-container .header-body .header-menu-open .menu-item-normal-active {
-    background: #41444C; }
-    .header-container .header-body .header-menu-open .menu-item-primary-active a, .header-container .header-body .header-menu-open .menu-item-normal-active a {
-      color: #fff;
-      opacity: 1; } }
-.bar {
-  margin-top: 66px;
-  background-image: linear-gradient(-90deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-  .bar .bar-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    height: 200px;
-    line-height: 200px;
-    font-family: Avenir-Heavy;
-    font-size: 36px;
-    color: #FFF;
-    position: relative; }
-    .bar .bar-body::before {
-      content: '';
-      height: 100%;
-      position: absolute;
-      left: 42px;
-      top: 0;
-      opacity: 0.3;
-      border-left: 1px solid #FFFFFF; }
-    .bar .bar-body::after {
-      content: '';
-      height: 16px;
-      position: absolute;
-      left: 40px;
-      top: 50%;
-      margin: auto 0;
-      border-left: 4px solid #FFFFFF; }
-    .bar .bar-body .front-img {
-      width: 80px;
-      height: 80px;
-      vertical-align: middle;
-      margin: 0 28px 0 70px; }
-    .bar .bar-body .back-img {
-      width: 160px;
-      height: 160px;
-      position: absolute;
-      right: 168px;
-      bottom: 0;
-      opacity: 0.15; }
-    @media screen and (max-width: 640px) {
-      .bar .bar-body::before {
-        left: 22px; }
-      .bar .bar-body::after {
-        left: 20px; }
-      .bar .bar-body .front-img {
-        margin-left: 50px; } }
-.footer-container {
-  background: #F8F8F8; }
-  .footer-container .footer-body {
-    max-width: 1280px;
-    margin: 0 auto;
-    box-sizing: border-box;
-    padding: 40px 40px 0; }
-    @media screen and (max-width: 640px) {
-      .footer-container .footer-body {
-        padding-left: 20px;
-        padding-right: 20px; } }
-    .footer-container .footer-body img {
-      width: 125px;
-      height: 56px;
-      margin-bottom: 10px;
-      vertical-align: middle; }
-    .footer-container .footer-body .cols-container {
-      margin-bottom: 60px; }
-      .footer-container .footer-body .cols-container .col {
-        display: inline-block;
-        box-sizing: border-box;
-        vertical-align: top; }
-      .footer-container .footer-body .cols-container .col-12 {
-        width: 50%;
-        padding-right: 125px; }
-      .footer-container .footer-body .cols-container .col-6 {
-        width: 25%; }
-      .footer-container .footer-body .cols-container h3 {
-        font-family: Avenir-Heavy;
-        font-size: 18px;
-        color: #333;
-        line-height: 18px;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container p {
-        font-family: Avenir-Medium;
-        font-size: 12px;
-        color: #999;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dl {
-        font-family: Avenir-Heavy;
-        line-height: 18px; }
-      .footer-container .footer-body .cols-container dt {
-        font-weight: bold;
-        font-size: 18px;
-        color: #333;
-        margin-bottom: 20px; }
-      .footer-container .footer-body .cols-container dd {
-        padding: 0;
-        margin: 0; }
-        .footer-container .footer-body .cols-container dd a {
-          text-decoration: none;
-          display: block;
-          font-size: 14px;
-          color: #999;
-          margin: 10px 0; }
-        .footer-container .footer-body .cols-container dd a:hover {
-          color: #2DACEC; }
-    .footer-container .footer-body .copyright {
-      border-top: 1px solid #ccc;
-      min-height: 60px;
-      line-height: 20px;
-      text-align: center;
-      font-family: Avenir-Medium;
-      font-size: 12px;
-      color: #999;
-      display: flex;
-      align-items: center; }
-      .footer-container .footer-body .copyright span {
-        display: inline-block;
-        margin: 0 auto; }
-
-@media screen and (max-width: 640px) {
-  .footer-container .footer-body .cols-container .col {
-    width: 100%;
-    text-align: center;
-    padding: 0; } }
-.sidemenu {
-  background: #F2F3F7;
-  width: 295px;
-  position: relative;
-  display: inline-block;
-  padding: 20px 0; }
-  .sidemenu .sidemenu-toggle {
-    text-align: center;
-    cursor: pointer;
-    position: absolute;
-    top: 0;
-    width: 40px;
-    right: -40px;
-    height: 30px;
-    line-height: 30px;
-    background: #F2F3F7;
-    border-radius: 0 4px 4px 0;
-    display: none; }
-    .sidemenu .sidemenu-toggle img {
-      width: 16px;
-      text-align: center;
-      vertical-align: middle; }
-  .sidemenu ul {
-    list-style: none;
-    padding: 0;
-    margin: 0; }
-  .sidemenu li {
-    line-height: 0; }
-  .sidemenu span, .sidemenu a {
-    box-sizing: border-box;
-    display: inline-block;
-    position: relative;
-    width: 100%;
-    overflow-x: hidden;
-    text-overflow: ellipsis;
-    white-space: nowrap; }
-  .sidemenu .menu-item-selected a {
-    background: white; }
-  .sidemenu .menu-item-selected a::before {
-    content: '';
-    position: absolute;
-    left: 0;
-    top: 0;
-    width: 4px;
-    height: 100%;
-    background-image: linear-gradient(0deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-  .sidemenu .menu-item-level-1 > span {
-    font-family: Avenir-Heavy;
-    font-size: 18px;
-    color: #333;
-    padding-left: 20px;
-    height: 40px;
-    line-height: 40px; }
-  .sidemenu .menu-item-level-2, .sidemenu .menu-item-level-3 {
-    cursor: pointer; }
-    .sidemenu .menu-item-level-2 > span, .sidemenu .menu-item-level-2 > a, .sidemenu .menu-item-level-3 > span, .sidemenu .menu-item-level-3 > a {
-      font-family: Avenir-Medium;
-      font-size: 14px;
-      color: #666; }
-      .sidemenu .menu-item-level-2 > span:hover, .sidemenu .menu-item-level-2 > a:hover, .sidemenu .menu-item-level-3 > span:hover, .sidemenu .menu-item-level-3 > a:hover {
-        background: white; }
-        .sidemenu .menu-item-level-2 > span:hover::before, .sidemenu .menu-item-level-2 > a:hover::before, .sidemenu .menu-item-level-3 > span:hover::before, .sidemenu .menu-item-level-3 > a:hover::before {
-          content: '';
-          position: absolute;
-          left: 0;
-          top: 0;
-          width: 4px;
-          height: 100%;
-          background-image: linear-gradient(0deg, #2D303A 0%, #2D303A 51%, #41444C 100%); }
-  .sidemenu .menu-item-level-2 > span, .sidemenu .menu-item-level-2 > a {
-    padding-left: 40px;
-    height: 36px;
-    line-height: 36px; }
-    .sidemenu .menu-item-level-2 > span img.menu-toggle, .sidemenu .menu-item-level-2 > a img.menu-toggle {
-      float: right;
-      width: 13px;
-      height: 8px;
-      margin: 14px 20px 14px 0; }
-  .sidemenu .menu-item-level-3 > a {
-    padding-left: 60px;
-    height: 36px;
-    line-height: 36px; }
-
-@media screen and (max-width: 640px) {
-  .sidemenu {
-    width: 0; }
-    .sidemenu .sidemenu-toggle {
-      display: inline-block; }
-    .sidemenu.sidemenu-open {
-      width: 295px; } }
-@charset "UTF-8";
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size10, .katex .sizing.reset-size2.size10 {
-  font-size: 3.55714286em; }
-
-.katex .fontsize-ensurer.reset-size3.size1, .katex .sizing.reset-size3.size1 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size3.size2, .katex .sizing.reset-size3.size2 {
-  font-size: .875em; }
-
-.katex .fontsize-ensurer.reset-size3.size3, .katex .sizing.reset-size3.size3 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size3.size4, .katex .sizing.reset-size3.size4 {
-  font-size: 1.125em; }
-
-.katex .fontsize-ensurer.reset-size3.size5, .katex .sizing.reset-size3.size5 {
-  font-size: 1.25em; }
-
-.katex .fontsize-ensurer.reset-size3.size6, .katex .sizing.reset-size3.size6 {
-  font-size: 1.5em; }
-
-.katex .fontsize-ensurer.reset-size3.size7, .katex .sizing.reset-size3.size7 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size3.size8, .katex .sizing.reset-size3.size8 {
-  font-size: 2.1625em; }
-
-.katex .fontsize-ensurer.reset-size3.size9, .katex .sizing.reset-size3.size9 {
-  font-size: 2.5875em; }
-
-.katex .fontsize-ensurer.reset-size3.size10, .katex .sizing.reset-size3.size10 {
-  font-size: 3.1125em; }
-
-.katex .fontsize-ensurer.reset-size4.size1, .katex .sizing.reset-size4.size1 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size4.size2, .katex .sizing.reset-size4.size2 {
-  font-size: .77777778em; }
-
-.katex .fontsize-ensurer.reset-size4.size3, .katex .sizing.reset-size4.size3 {
-  font-size: .88888889em; }
-
-.katex .fontsize-ensurer.reset-size4.size4, .katex .sizing.reset-size4.size4 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size4.size5, .katex .sizing.reset-size4.size5 {
-  font-size: 1.11111111em; }
-
-.katex .fontsize-ensurer.reset-size4.size6, .katex .sizing.reset-size4.size6 {
-  font-size: 1.33333333em; }
-
-.katex .fontsize-ensurer.reset-size4.size7, .katex .sizing.reset-size4.size7 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size4.size8, .katex .sizing.reset-size4.size8 {
-  font-size: 1.92222222em; }
-
-.katex .fontsize-ensurer.reset-size4.size9, .katex .sizing.reset-size4.size9 {
-  font-size: 2.3em; }
-
-.katex .fontsize-ensurer.reset-size4.size10, .katex .sizing.reset-size4.size10 {
-  font-size: 2.76666667em; }
-
-.katex .fontsize-ensurer.reset-size5.size1, .katex .sizing.reset-size5.size1 {
-  font-size: .5em; }
-
-.katex .fontsize-ensurer.reset-size5.size2, .katex .sizing.reset-size5.size2 {
-  font-size: .7em; }
-
-.katex .fontsize-ensurer.reset-size5.size3, .katex .sizing.reset-size5.size3 {
-  font-size: .8em; }
-
-.katex .fontsize-ensurer.reset-size5.size4, .katex .sizing.reset-size5.size4 {
-  font-size: .9em; }
-
-.katex .fontsize-ensurer.reset-size5.size5, .katex .sizing.reset-size5.size5 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size5.size6, .katex .sizing.reset-size5.size6 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size5.size7, .katex .sizing.reset-size5.size7 {
-  font-size: 1.44em; }
-
-.katex .fontsize-ensurer.reset-size5.size8, .katex .sizing.reset-size5.size8 {
-  font-size: 1.73em; }
-
-.katex .fontsize-ensurer.reset-size5.size9, .katex .sizing.reset-size5.size9 {
-  font-size: 2.07em; }
-
-.katex .fontsize-ensurer.reset-size5.size10, .katex .sizing.reset-size5.size10 {
-  font-size: 2.49em; }
-
-.katex .fontsize-ensurer.reset-size6.size1, .katex .sizing.reset-size6.size1 {
-  font-size: .41666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size2, .katex .sizing.reset-size6.size2 {
-  font-size: .58333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size3, .katex .sizing.reset-size6.size3 {
-  font-size: .66666667em; }
-
-.katex .fontsize-ensurer.reset-size6.size4, .katex .sizing.reset-size6.size4 {
-  font-size: .75em; }
-
-.katex .fontsize-ensurer.reset-size6.size5, .katex .sizing.reset-size6.size5 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size6.size6, .katex .sizing.reset-size6.size6 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size6.size7, .katex .sizing.reset-size6.size7 {
-  font-size: 1.2em; }
-
-.katex .fontsize-ensurer.reset-size6.size8, .katex .sizing.reset-size6.size8 {
-  font-size: 1.44166667em; }
-
-.katex .fontsize-ensurer.reset-size6.size9, .katex .sizing.reset-size6.size9 {
-  font-size: 1.725em; }
-
-.katex .fontsize-ensurer.reset-size6.size10, .katex .sizing.reset-size6.size10 {
-  font-size: 2.075em; }
-
-.katex .fontsize-ensurer.reset-size7.size1, .katex .sizing.reset-size7.size1 {
-  font-size: .34722222em; }
-
-.katex .fontsize-ensurer.reset-size7.size2, .katex .sizing.reset-size7.size2 {
-  font-size: .48611111em; }
-
-.katex .fontsize-ensurer.reset-size7.size3, .katex .sizing.reset-size7.size3 {
-  font-size: .55555556em; }
-
-.katex .fontsize-ensurer.reset-size7.size4, .katex .sizing.reset-size7.size4 {
-  font-size: .625em; }
-
-.katex .fontsize-ensurer.reset-size7.size5, .katex .sizing.reset-size7.size5 {
-  font-size: .69444444em; }
-
-.katex .fontsize-ensurer.reset-size7.size6, .katex .sizing.reset-size7.size6 {
-  font-size: .83333333em; }
-
-.katex .fontsize-ensurer.reset-size7.size7, .katex .sizing.reset-size7.size7 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size7.size8, .katex .sizing.reset-size7.size8 {
-  font-size: 1.20138889em; }
-
-.katex .fontsize-ensurer.reset-size7.size9, .katex .sizing.reset-size7.size9 {
-  font-size: 1.4375em; }
-
-.katex .fontsize-ensurer.reset-size7.size10, .katex .sizing.reset-size7.size10 {
-  font-size: 1.72916667em; }
-
-.katex .fontsize-ensurer.reset-size8.size1, .katex .sizing.reset-size8.size1 {
-  font-size: .28901734em; }
-
-.katex .fontsize-ensurer.reset-size8.size2, .katex .sizing.reset-size8.size2 {
-  font-size: .40462428em; }
-
-.katex .fontsize-ensurer.reset-size8.size3, .katex .sizing.reset-size8.size3 {
-  font-size: .46242775em; }
-
-.katex .fontsize-ensurer.reset-size8.size4, .katex .sizing.reset-size8.size4 {
-  font-size: .52023121em; }
-
-.katex .fontsize-ensurer.reset-size8.size5, .katex .sizing.reset-size8.size5 {
-  font-size: .57803468em; }
-
-.katex .fontsize-ensurer.reset-size8.size6, .katex .sizing.reset-size8.size6 {
-  font-size: .69364162em; }
-
-.katex .fontsize-ensurer.reset-size8.size7, .katex .sizing.reset-size8.size7 {
-  font-size: .83236994em; }
-
-.katex .fontsize-ensurer.reset-size8.size8, .katex .sizing.reset-size8.size8 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size8.size9, .katex .sizing.reset-size8.size9 {
-  font-size: 1.19653179em; }
-
-.katex .fontsize-ensurer.reset-size8.size10, .katex .sizing.reset-size8.size10 {
-  font-size: 1.43930636em; }
-
-.katex .fontsize-ensurer.reset-size9.size1, .katex .sizing.reset-size9.size1 {
-  font-size: .24154589em; }
-
-.katex .fontsize-ensurer.reset-size9.size2, .katex .sizing.reset-size9.size2 {
-  font-size: .33816425em; }
-
-.katex .fontsize-ensurer.reset-size9.size3, .katex .sizing.reset-size9.size3 {
-  font-size: .38647343em; }
-
-.katex .fontsize-ensurer.reset-size9.size4, .katex .sizing.reset-size9.size4 {
-  font-size: .43478261em; }
-
-.katex .fontsize-ensurer.reset-size9.size5, .katex .sizing.reset-size9.size5 {
-  font-size: .48309179em; }
-
-.katex .fontsize-ensurer.reset-size9.size6, .katex .sizing.reset-size9.size6 {
-  font-size: .57971014em; }
-
-.katex .fontsize-ensurer.reset-size9.size7, .katex .sizing.reset-size9.size7 {
-  font-size: .69565217em; }
-
-.katex .fontsize-ensurer.reset-size9.size8, .katex .sizing.reset-size9.size8 {
-  font-size: .83574879em; }
-
-.katex .fontsize-ensurer.reset-size9.size9, .katex .sizing.reset-size9.size9 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size9.size10, .katex .sizing.reset-size9.size10 {
-  font-size: 1.20289855em; }
-
-.katex .fontsize-ensurer.reset-size10.size1, .katex .sizing.reset-size10.size1 {
-  font-size: .20080321em; }
-
-.katex .fontsize-ensurer.reset-size10.size2, .katex .sizing.reset-size10.size2 {
-  font-size: .2811245em; }
-
-.katex .fontsize-ensurer.reset-size10.size3, .katex .sizing.reset-size10.size3 {
-  font-size: .32128514em; }
-
-.katex .fontsize-ensurer.reset-size10.size4, .katex .sizing.reset-size10.size4 {
-  font-size: .36144578em; }
-
-.katex .fontsize-ensurer.reset-size10.size5, .katex .sizing.reset-size10.size5 {
-  font-size: .40160643em; }
-
-.katex .fontsize-ensurer.reset-size10.size6, .katex .sizing.reset-size10.size6 {
-  font-size: .48192771em; }
-
-.katex .fontsize-ensurer.reset-size10.size7, .katex .sizing.reset-size10.size7 {
-  font-size: .57831325em; }
-
-.katex .fontsize-ensurer.reset-size10.size8, .katex .sizing.reset-size10.size8 {
-  font-size: .69477912em; }
-
-.katex .fontsize-ensurer.reset-size10.size9, .katex .sizing.reset-size10.size9 {
-  font-size: .8313253em; }
-
-.katex .fontsize-ensurer.reset-size10.size10, .katex .sizing.reset-size10.size10 {
-  font-size: 1em; }
-
-.katex .delimsizing.size1 {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.size2 {
-  font-family: KaTeX_Size2; }
-
-.katex .delimsizing.size3 {
-  font-family: KaTeX_Size3; }
-
-.katex .delimsizing.size4 {
-  font-family: KaTeX_Size4; }
-
-.katex .delimsizing.mult .delim-size1 > span {
-  font-family: KaTeX_Size1; }
-
-.katex .delimsizing.mult .delim-size4 > span {
-  font-family: KaTeX_Size4; }
-
-.katex .nulldelimiter {
-  display: inline-block;
-  width: .12em; }
-
-.katex .op-symbol {
-  position: relative; }
-
-.katex .op-symbol.small-op {
-  font-family: KaTeX_Size1; }
-
-.katex .op-symbol.large-op {
-  font-family: KaTeX_Size2; }
-
-.katex .accent > .vlist > span, .katex .op-limits > .vlist > span {
-  text-align: center; }
-
-.katex .accent .accent-body > span {
-  width: 0; }
-
-.katex .accent .accent-body.accent-vec > span {
-  position: relative;
-  left: .326em; }
-
-.katex .mtable .vertical-separator {
-  display: inline-block;
-  margin: 0 -.025em;
-  border-right: .05em solid #000; }
-
-.katex .mtable .arraycolsep {
-  display: inline-block; }
-
-.katex .mtable .col-align-c > .vlist {
-  text-align: center; }
-
-.katex .mtable .col-align-l > .vlist {
-  text-align: left; }
-
-.katex .mtable .col-align-r > .vlist {
-  text-align: right; }
-
-* {
-  padding: 0;
-  margin: 0; }
-
-a {
-  text-decoration: none; }
-
-h1, h2, h3, h4, h5, h6 {
-  font-weight: 400; }
-
-@font-face {
-  font-family: octicons-link;
-  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAAAZwABAAAAAACFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABEU0lHAAAGaAAAAAgAAAAIAAAAAUdTVUIAAAZcAAAACgAAAAoAAQAAT1MvMgAAAyQAAABJAAAAYFYEU3RjbWFwAAADcAAAAEUAAACAAJThvmN2dCAAAATkAAAABAAAAAQAAAAAZnBnbQAAA7gAAACyAAABCUM+8IhnYXNwAAAGTAAAABAAAAAQABoAI2dseWYAAAFsAAABPAAAAZwcEq9taGVhZAAAAsgAAAA0AAAANgh4a91oaGVhAAADCAAAABoAAAAkCA8DRGhtdHgAAAL8AAAADAAAAAwGAACfbG9jYQAAAsAAAAAIAAAACABiATBtYXhwAAACqAAAABgAAAAgAA8ASm5hbWUAAAToAAABQgAAAlXu73sOcG9zdAAABiwAA [...]
-
-.markdown-body {
-  -ms-text-size-adjust: 100%;
-  -webkit-text-size-adjust: 100%;
-  line-height: 1.5;
-  color: #24292e;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 16px;
-  line-height: 1.5;
-  word-wrap: break-word; }
-
-.markdown-body .pl-c {
-  color: #6a737d; }
-
-.markdown-body .pl-c1,
-.markdown-body .pl-s .pl-v {
-  color: #005cc5; }
-
-.markdown-body .pl-e,
-.markdown-body .pl-en {
-  color: #6f42c1; }
-
-.markdown-body .pl-smi,
-.markdown-body .pl-s .pl-s1 {
-  color: #24292e; }
-
-.markdown-body .pl-ent {
-  color: #22863a; }
-
-.markdown-body .pl-k {
-  color: #d73a49; }
-
-.markdown-body .pl-s,
-.markdown-body .pl-pds,
-.markdown-body .pl-s .pl-pse .pl-s1,
-.markdown-body .pl-sr,
-.markdown-body .pl-sr .pl-cce,
-.markdown-body .pl-sr .pl-sre,
-.markdown-body .pl-sr .pl-sra {
-  color: #032f62; }
-
-.markdown-body .pl-v,
-.markdown-body .pl-smw {
-  color: #e36209; }
-
-.markdown-body .pl-bu {
-  color: #b31d28; }
-
-.markdown-body .pl-ii {
-  color: #fafbfc;
-  background-color: #b31d28; }
-
-.markdown-body .pl-c2 {
-  color: #fafbfc;
-  background-color: #d73a49; }
-
-.markdown-body .pl-c2::before {
-  content: "^M"; }
-
-.markdown-body .pl-sr .pl-cce {
-  font-weight: bold;
-  color: #22863a; }
-
-.markdown-body .pl-ml {
-  color: #735c0f; }
-
-.markdown-body .pl-mh,
-.markdown-body .pl-mh .pl-en,
-.markdown-body .pl-ms {
-  font-weight: bold;
-  color: #005cc5; }
-
-.markdown-body .pl-mi {
-  font-style: italic;
-  color: #24292e; }
-
-.markdown-body .pl-mb {
-  font-weight: bold;
-  color: #24292e; }
-
-.markdown-body .pl-md {
-  color: #b31d28;
-  background-color: #ffeef0; }
-
-.markdown-body .pl-mi1 {
-  color: #22863a;
-  background-color: #f0fff4; }
-
-.markdown-body .pl-mc {
-  color: #e36209;
-  background-color: #ffebda; }
-
-.markdown-body .pl-mi2 {
-  color: #f6f8fa;
-  background-color: #005cc5; }
-
-.markdown-body .pl-mdr {
-  font-weight: bold;
-  color: #6f42c1; }
-
-.markdown-body .pl-ba {
-  color: #586069; }
-
-.markdown-body .pl-sg {
-  color: #959da5; }
-
-.markdown-body .pl-corl {
-  text-decoration: underline;
-  color: #032f62; }
-
-.markdown-body .octicon {
-  display: inline-block;
-  vertical-align: text-top;
-  fill: currentColor; }
-
-.markdown-body a {
-  background-color: transparent; }
-
-.markdown-body a:active,
-.markdown-body a:hover {
-  outline-width: 0; }
-
-.markdown-body strong {
-  font-weight: inherit; }
-
-.markdown-body strong {
-  font-weight: bolder; }
-
-.markdown-body h1 {
-  font-size: 2em;
-  margin: 0.67em 0; }
-
-.markdown-body img {
-  border-style: none; }
-
-.markdown-body code,
-.markdown-body kbd,
-.markdown-body pre {
-  font-family: monospace, monospace;
-  font-size: 1em; }
-
-.markdown-body hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible; }
-
-.markdown-body input {
-  font: inherit;
-  margin: 0; }
-
-.markdown-body input {
-  overflow: visible; }
-
-.markdown-body [type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0; }
-
-.markdown-body * {
-  box-sizing: border-box; }
-
-.markdown-body input {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit; }
-
-.markdown-body a {
-  color: #0366d6;
-  text-decoration: none; }
-
-.markdown-body a:hover {
-  color: #0366d6;
-  text-decoration: underline; }
-
-.markdown-body strong {
-  font-weight: 600; }
-
-.markdown-body hr {
-  height: 0;
-  margin: 15px 0;
-  overflow: hidden;
-  background: transparent;
-  border: 0;
-  border-bottom: 1px solid #dfe2e5; }
-
-.markdown-body hr::before {
-  display: table;
-  content: ""; }
-
-.markdown-body hr::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body table {
-  border-spacing: 0;
-  border-collapse: collapse; }
-
-.markdown-body td,
-.markdown-body th {
-  padding: 0; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body h1 {
-  font-size: 32px;
-  font-weight: 600; }
-
-.markdown-body h2 {
-  font-size: 24px;
-  font-weight: 600; }
-
-.markdown-body h3 {
-  font-size: 20px;
-  font-weight: 600; }
-
-.markdown-body h4 {
-  font-size: 16px;
-  font-weight: 600; }
-
-.markdown-body h5 {
-  font-size: 14px;
-  font-weight: 600; }
-
-.markdown-body h6 {
-  font-size: 12px;
-  font-weight: 600; }
-
-.markdown-body p {
-  margin-top: 0;
-  margin-bottom: 10px; }
-
-.markdown-body blockquote {
-  margin: 0; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 0;
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body ol ol,
-.markdown-body ul ol {
-  list-style-type: lower-roman; }
-
-.markdown-body ul ul ol,
-.markdown-body ul ol ol,
-.markdown-body ol ul ol,
-.markdown-body ol ol ol {
-  list-style-type: lower-alpha; }
-
-.markdown-body dd {
-  margin-left: 0; }
-
-.markdown-body code {
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 12px; }
-
-.markdown-body .octicon {
-  vertical-align: text-bottom; }
-
-.markdown-body .pl-0 {
-  padding-left: 0 !important; }
-
-.markdown-body .pl-1 {
-  padding-left: 4px !important; }
-
-.markdown-body .pl-2 {
-  padding-left: 8px !important; }
-
-.markdown-body .pl-3 {
-  padding-left: 16px !important; }
-
-.markdown-body .pl-4 {
-  padding-left: 24px !important; }
-
-.markdown-body .pl-5 {
-  padding-left: 32px !important; }
-
-.markdown-body .pl-6 {
-  padding-left: 40px !important; }
-
-.markdown-body::before {
-  display: table;
-  content: ""; }
-
-.markdown-body::after {
-  display: table;
-  clear: both;
-  content: ""; }
-
-.markdown-body > *:first-child {
-  margin-top: 0 !important; }
-
-.markdown-body > *:last-child {
-  margin-bottom: 0 !important; }
-
-.markdown-body a:not([href]) {
-  color: inherit;
-  text-decoration: none; }
-
-.markdown-body .anchor {
-  float: left;
-  padding-right: 4px;
-  margin-left: -20px;
-  line-height: 1; }
-
-.markdown-body .anchor:focus {
-  outline: none; }
-
-.markdown-body p,
-.markdown-body blockquote,
-.markdown-body ul,
-.markdown-body ol,
-.markdown-body dl,
-.markdown-body table,
-.markdown-body pre {
-  margin-top: 0;
-  margin-bottom: 16px; }
-
-.markdown-body hr {
-  height: 0.25em;
-  padding: 0;
-  margin: 24px 0;
-  background-color: #e1e4e8;
-  border: 0; }
-
-.markdown-body blockquote {
-  padding: 0 1em;
-  color: #6a737d;
-  border-left: 0.25em solid #dfe2e5; }
-
-.markdown-body blockquote > :first-child {
-  margin-top: 0; }
-
-.markdown-body blockquote > :last-child {
-  margin-bottom: 0; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font-size: 11px;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #c6cbd1;
-  border-bottom-color: #959da5;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #959da5; }
-
-.markdown-body h1,
-.markdown-body h2,
-.markdown-body h3,
-.markdown-body h4,
-.markdown-body h5,
-.markdown-body h6 {
-  margin-top: 24px;
-  margin-bottom: 16px;
-  font-weight: 600;
-  line-height: 1.25; }
-
-.markdown-body h1 .octicon-link,
-.markdown-body h2 .octicon-link,
-.markdown-body h3 .octicon-link,
-.markdown-body h4 .octicon-link,
-.markdown-body h5 .octicon-link,
-.markdown-body h6 .octicon-link {
-  color: #1b1f23;
-  vertical-align: middle;
-  visibility: hidden; }
-
-.markdown-body h1:hover .anchor,
-.markdown-body h2:hover .anchor,
-.markdown-body h3:hover .anchor,
-.markdown-body h4:hover .anchor,
-.markdown-body h5:hover .anchor,
-.markdown-body h6:hover .anchor {
-  text-decoration: none; }
-
-.markdown-body h1:hover .anchor .octicon-link,
-.markdown-body h2:hover .anchor .octicon-link,
-.markdown-body h3:hover .anchor .octicon-link,
-.markdown-body h4:hover .anchor .octicon-link,
-.markdown-body h5:hover .anchor .octicon-link,
-.markdown-body h6:hover .anchor .octicon-link {
-  visibility: visible; }
-
-.markdown-body h1 {
-  padding-bottom: 0.3em;
-  font-size: 2em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h2 {
-  padding-bottom: 0.3em;
-  font-size: 1.5em;
-  border-bottom: 1px solid #eaecef; }
-
-.markdown-body h3 {
-  font-size: 1.25em; }
-
-.markdown-body h4 {
-  font-size: 1em; }
-
-.markdown-body h5 {
-  font-size: 0.875em; }
-
-.markdown-body h6 {
-  font-size: 0.85em;
-  color: #6a737d; }
-
-.markdown-body ul,
-.markdown-body ol {
-  padding-left: 2em; }
-
-.markdown-body ul ul,
-.markdown-body ul ol,
-.markdown-body ol ol,
-.markdown-body ol ul {
-  margin-top: 0;
-  margin-bottom: 0; }
-
-.markdown-body li {
-  word-wrap: break-all; }
-
-.markdown-body li > p {
-  margin-top: 16px; }
-
-.markdown-body li + li {
-  margin-top: 0.25em; }
-
-.markdown-body dl {
-  padding: 0; }
-
-.markdown-body dl dt {
-  padding: 0;
-  margin-top: 16px;
-  font-size: 1em;
-  font-style: italic;
-  font-weight: 600; }
-
-.markdown-body dl dd {
-  padding: 0 16px;
-  margin-bottom: 16px; }
-
-.markdown-body table {
-  display: block;
-  width: 100%;
-  overflow: auto; }
-
-.markdown-body table th {
-  font-weight: 600; }
-
-.markdown-body table th,
-.markdown-body table td {
-  padding: 6px 13px;
-  border: 1px solid #dfe2e5; }
-
-.markdown-body table tr {
-  background-color: #fff;
-  border-top: 1px solid #c6cbd1; }
-
-.markdown-body table tr:nth-child(2n) {
-  background-color: #f6f8fa; }
-
-.markdown-body img {
-  max-width: 100%;
-  box-sizing: content-box;
-  background-color: #fff; }
-
-.markdown-body img[align=right] {
-  padding-left: 20px; }
-
-.markdown-body img[align=left] {
-  padding-right: 20px; }
-
-.markdown-body code {
-  padding: 0.2em 0.4em;
-  margin: 0;
-  font-size: 85%;
-  background-color: rgba(27, 31, 35, 0.05);
-  border-radius: 3px; }
-
-.markdown-body pre {
-  word-wrap: normal; }
-
-.markdown-body pre > code {
-  padding: 0;
-  margin: 0;
-  font-size: 100%;
-  word-break: normal;
-  white-space: pre;
-  background: transparent;
-  border: 0; }
-
-.markdown-body .highlight {
-  margin-bottom: 16px; }
-
-.markdown-body .highlight pre {
-  margin-bottom: 0;
-  word-break: normal; }
-
-.markdown-body .highlight pre,
-.markdown-body pre {
-  padding: 16px;
-  overflow: auto;
-  font-size: 85%;
-  line-height: 1.45;
-  background-color: #f6f8fa;
-  border-radius: 3px; }
-
-.markdown-body pre code {
-  display: inline;
-  max-width: auto;
-  padding: 0;
-  margin: 0;
-  overflow: visible;
-  line-height: inherit;
-  word-wrap: normal;
-  background-color: transparent;
-  border: 0; }
-
-.markdown-body .full-commit .btn-outline:not(:disabled):hover {
-  color: #005cc5;
-  border-color: #005cc5; }
-
-.markdown-body kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  line-height: 10px;
-  color: #444d56;
-  vertical-align: middle;
-  background-color: #fafbfc;
-  border: solid 1px #d1d5da;
-  border-bottom-color: #c6cbd1;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0 #c6cbd1; }
-
-.markdown-body :checked + .radio-label {
-  position: relative;
-  z-index: 1;
-  border-color: #0366d6; }
-
-.markdown-body .task-list-item {
-  list-style-type: none; }
-
-.markdown-body .task-list-item + .task-list-item {
-  margin-top: 3px; }
-
-.markdown-body .task-list-item input {
-  margin: 0 0.2em 0.25em -1.6em;
-  vertical-align: middle; }
-
-.markdown-body hr {
-  border-bottom-color: #eee; }
-
-/* 代码高亮 */
-.markdown-body pre code {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  background: #f6f8fa;
-  color: #24292e; }
-
-/*
-
-github.com style (c) Vasily Polovnyov <va...@whiteants.net>
-
-*/
-.hljs {
-  display: block;
-  overflow-x: auto;
-  padding: 0.5em;
-  color: #333;
-  background: #f8f8f8; }
-
-.hljs-comment,
-.hljs-quote {
-  color: #998;
-  font-style: italic; }
-
-.hljs-keyword,
-.hljs-selector-tag,
-.hljs-subst {
-  color: #333;
-  font-weight: bold; }
-
-.hljs-number,
-.hljs-literal,
-.hljs-variable,
-.hljs-template-variable,
-.hljs-tag .hljs-attr {
-  color: #008080; }
-
-.hljs-string,
-.hljs-doctag {
-  color: #d14; }
-
-.hljs-title,
-.hljs-section,
-.hljs-selector-id {
-  color: #900;
-  font-weight: bold; }
-
-.hljs-subst {
-  font-weight: normal; }
-
-.hljs-type,
-.hljs-class .hljs-title {
-  color: #458;
-  font-weight: bold; }
-
-.hljs-tag,
-.hljs-name,
-.hljs-attribute {
-  color: #000080;
-  font-weight: normal; }
-
-.hljs-regexp,
-.hljs-link {
-  color: #009926; }
-
-.hljs-symbol,
-.hljs-bullet {
-  color: #990073; }
-
-.hljs-built_in,
-.hljs-builtin-name {
-  color: #0086b3; }
-
-.hljs-meta {
-  color: #999;
-  font-weight: bold; }
-
-.hljs-deletion {
-  background: #fdd; }
-
-.hljs-addition {
-  background: #dfd; }
-
-.hljs-emphasis {
-  font-style: italic; }
-
-.hljs-strong {
-  font-weight: bold; }
-
-@font-face {
-  font-family: KaTeX_AMS;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_AMS-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Caligraphic;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Caligraphic-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Fraktur;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Fraktur-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Bold.ttf) format("ttf");
-  font-weight: 700;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_Main;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Main-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Math;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Math-Italic.ttf) format("ttf");
-  font-weight: 400;
-  font-style: italic; }
-
-@font-face {
-  font-family: KaTeX_SansSerif;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_SansSerif-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Script;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Script-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size1;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size1-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size2;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size2-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size3;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size3-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Size4;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Size4-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-@font-face {
-  font-family: KaTeX_Typewriter;
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot);
-  src: url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.eot#iefix) format("embedded-opentype"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/fonts/KaTeX_Typewriter-Regular.ttf) format("ttf");
-  font-weight: 400;
-  font-style: normal; }
-
-.katex-display {
-  display: block;
-  margin: 1em 0;
-  text-align: center; }
-
-.katex-display > .katex {
-  display: inline-block; }
-
-.katex {
-  font: 400 1.21em KaTeX_Main;
-  line-height: 1.2;
-  white-space: nowrap;
-  text-indent: 0; }
-
-.katex .katex-html {
-  display: inline-block; }
-
-.katex .katex-mathml {
-  position: absolute;
-  clip: rect(1px, 1px, 1px, 1px);
-  padding: 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden; }
-
-.katex .base, .katex .strut {
-  display: inline-block; }
-
-.katex .mathit {
-  font-family: KaTeX_Math;
-  font-style: italic; }
-
-.katex .mathbf {
-  font-family: KaTeX_Main;
-  font-weight: 700; }
-
-.katex .amsrm, .katex .mathbb {
-  font-family: KaTeX_AMS; }
-
-.katex .mathcal {
-  font-family: KaTeX_Caligraphic; }
-
-.katex .mathfrak {
-  font-family: KaTeX_Fraktur; }
-
-.katex .mathtt {
-  font-family: KaTeX_Typewriter; }
-
-.katex .mathscr {
-  font-family: KaTeX_Script; }
-
-.katex .mathsf {
-  font-family: KaTeX_SansSerif; }
-
-.katex .mainit {
-  font-family: KaTeX_Main;
-  font-style: italic; }
-
-.katex .textstyle > .mord + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mord + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mord + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .mop, .katex .textstyle > .mop + .mord, .katex .textstyle > .mord + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mop + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mop + .minner {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mbin + .minner, .katex .textstyle > .mbin + .mop, .katex .textstyle > .mbin + .mopen, .katex .textstyle > .mbin + .mord {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mrel + .minner, .katex .textstyle > .mrel + .mop, .katex .textstyle > .mrel + .mopen, .katex .textstyle > .mrel + .mord {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .mop {
-  margin-left: .16667em; }
-
-.katex .textstyle > .mclose + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .mclose + .mrel {
-  margin-left: .27778em; }
-
-.katex .textstyle > .mclose + .minner, .katex .textstyle > .minner + .mop, .katex .textstyle > .minner + .mord, .katex .textstyle > .mpunct + .mclose, .katex .textstyle > .mpunct + .minner, .katex .textstyle > .mpunct + .mop, .katex .textstyle > .mpunct + .mopen, .katex .textstyle > .mpunct + .mord, .katex .textstyle > .mpunct + .mpunct, .katex .textstyle > .mpunct + .mrel {
-  margin-left: .16667em; }
-
-.katex .textstyle > .minner + .mbin {
-  margin-left: .22222em; }
-
-.katex .textstyle > .minner + .mrel {
-  margin-left: .27778em; }
-
-.katex .mclose + .mop, .katex .minner + .mop, .katex .mop + .mop, .katex .mop + .mord, .katex .mord + .mop, .katex .textstyle > .minner + .minner, .katex .textstyle > .minner + .mopen, .katex .textstyle > .minner + .mpunct {
-  margin-left: .16667em; }
-
-.katex .reset-textstyle.textstyle {
-  font-size: 1em; }
-
-.katex .reset-textstyle.scriptstyle {
-  font-size: .7em; }
-
-.katex .reset-textstyle.scriptscriptstyle {
-  font-size: .5em; }
-
-.katex .reset-scriptstyle.textstyle {
-  font-size: 1.42857em; }
-
-.katex .reset-scriptstyle.scriptstyle {
-  font-size: 1em; }
-
-.katex .reset-scriptstyle.scriptscriptstyle {
-  font-size: .71429em; }
-
-.katex .reset-scriptscriptstyle.textstyle {
-  font-size: 2em; }
-
-.katex .reset-scriptscriptstyle.scriptstyle {
-  font-size: 1.4em; }
-
-.katex .reset-scriptscriptstyle.scriptscriptstyle {
-  font-size: 1em; }
-
-.katex .style-wrap {
-  position: relative; }
-
-.katex .vlist {
-  display: inline-block; }
-
-.katex .vlist > span {
-  display: block;
-  height: 0;
-  position: relative; }
-
-.katex .vlist > span > span {
-  display: inline-block; }
-
-.katex .vlist .baseline-fix {
-  display: inline-table;
-  table-layout: fixed; }
-
-.katex .msupsub {
-  text-align: left; }
-
-.katex .mfrac > span > span {
-  text-align: center; }
-
-.katex .mfrac .frac-line {
-  width: 100%; }
-
-.katex .mfrac .frac-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .mfrac .frac-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .mspace {
-  display: inline-block; }
-
-.katex .mspace.negativethinspace {
-  margin-left: -.16667em; }
-
-.katex .mspace.thinspace {
-  width: .16667em; }
-
-.katex .mspace.mediumspace {
-  width: .22222em; }
-
-.katex .mspace.thickspace {
-  width: .27778em; }
-
-.katex .mspace.enspace {
-  width: .5em; }
-
-.katex .mspace.quad {
-  width: 1em; }
-
-.katex .mspace.qquad {
-  width: 2em; }
-
-.katex .llap, .katex .rlap {
-  width: 0;
-  position: relative; }
-
-.katex .llap > .inner, .katex .rlap > .inner {
-  position: absolute; }
-
-.katex .llap > .fix, .katex .rlap > .fix {
-  display: inline-block; }
-
-.katex .llap > .inner {
-  right: 0; }
-
-.katex .rlap > .inner {
-  left: 0; }
-
-.katex .katex-logo .a {
-  font-size: .75em;
-  margin-left: -.32em;
-  position: relative;
-  top: -.2em; }
-
-.katex .katex-logo .t {
-  margin-left: -.23em; }
-
-.katex .katex-logo .e {
-  margin-left: -.1667em;
-  position: relative;
-  top: .2155em; }
-
-.katex .katex-logo .x {
-  margin-left: -.125em; }
-
-.katex .rule {
-  display: inline-block;
-  border-style: solid;
-  position: relative; }
-
-.katex .overline .overline-line {
-  width: 100%; }
-
-.katex .overline .overline-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .overline .overline-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .sqrt-sign {
-  position: relative; }
-
-.katex .sqrt .sqrt-line {
-  width: 100%; }
-
-.katex .sqrt .sqrt-line:before {
-  border-bottom-style: solid;
-  border-bottom-width: 1px;
-  content: "";
-  display: block; }
-
-.katex .sqrt .sqrt-line:after {
-  border-bottom-style: solid;
-  border-bottom-width: .04em;
-  content: "";
-  display: block;
-  margin-top: -1px; }
-
-.katex .sqrt > .root {
-  margin-left: .27777778em;
-  margin-right: -.55555556em; }
-
-.katex .fontsize-ensurer, .katex .sizing {
-  display: inline-block; }
-
-.katex .fontsize-ensurer.reset-size1.size1, .katex .sizing.reset-size1.size1 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size1.size2, .katex .sizing.reset-size1.size2 {
-  font-size: 1.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size3, .katex .sizing.reset-size1.size3 {
-  font-size: 1.6em; }
-
-.katex .fontsize-ensurer.reset-size1.size4, .katex .sizing.reset-size1.size4 {
-  font-size: 1.8em; }
-
-.katex .fontsize-ensurer.reset-size1.size5, .katex .sizing.reset-size1.size5 {
-  font-size: 2em; }
-
-.katex .fontsize-ensurer.reset-size1.size6, .katex .sizing.reset-size1.size6 {
-  font-size: 2.4em; }
-
-.katex .fontsize-ensurer.reset-size1.size7, .katex .sizing.reset-size1.size7 {
-  font-size: 2.88em; }
-
-.katex .fontsize-ensurer.reset-size1.size8, .katex .sizing.reset-size1.size8 {
-  font-size: 3.46em; }
-
-.katex .fontsize-ensurer.reset-size1.size9, .katex .sizing.reset-size1.size9 {
-  font-size: 4.14em; }
-
-.katex .fontsize-ensurer.reset-size1.size10, .katex .sizing.reset-size1.size10 {
-  font-size: 4.98em; }
-
-.katex .fontsize-ensurer.reset-size2.size1, .katex .sizing.reset-size2.size1 {
-  font-size: .71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size2, .katex .sizing.reset-size2.size2 {
-  font-size: 1em; }
-
-.katex .fontsize-ensurer.reset-size2.size3, .katex .sizing.reset-size2.size3 {
-  font-size: 1.14285714em; }
-
-.katex .fontsize-ensurer.reset-size2.size4, .katex .sizing.reset-size2.size4 {
-  font-size: 1.28571429em; }
-
-.katex .fontsize-ensurer.reset-size2.size5, .katex .sizing.reset-size2.size5 {
-  font-size: 1.42857143em; }
-
-.katex .fontsize-ensurer.reset-size2.size6, .katex .sizing.reset-size2.size6 {
-  font-size: 1.71428571em; }
-
-.katex .fontsize-ensurer.reset-size2.size7, .katex .sizing.reset-size2.size7 {
-  font-size: 2.05714286em; }
-
-.katex .fontsize-ensurer.reset-size2.size8, .katex .sizing.reset-size2.size8 {
-  font-size: 2.47142857em; }
-
-.katex .fontsize-ensurer.reset-size2.size9, .katex .sizing.reset-size2.size9 {
-  font-size: 2.95714286em; }
... 9570 lines suppressed ...