@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,400italic,600,600italic,300italic,300|Source+Serif+Pro|Source+Code+Pro:400,300,500&subset=latin,latin-ext);
.markdown-body {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, 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:after,
.markdown-body:before {
  display: table;
  content: "";
}
.markdown-body:after {
  clear: both;
}
.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 .absent {
  color: #c00;
}
.markdown-body .anchor {
  float: left;
  padding-right: 4px;
  margin-left: -20px;
  line-height: 1;
}
.markdown-body .anchor:focus {
  outline: none;
}
.markdown-body blockquote,
.markdown-body dl,
.markdown-body ol,
.markdown-body p,
.markdown-body pre,
.markdown-body table,
.markdown-body ul {
  margin-top: 0;
  margin-bottom: 16px;
}
.markdown-body hr {
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background-color: #e7e7e7;
  border: 0;
}
.markdown-body blockquote {
  padding: 0 1em;
  color: #777;
  border-left: 0.25em solid #ddd;
}
.night .markdown-body blockquote {
  color: #bcbcbc;
}
.markdown-body blockquote > :first-child {
  margin-top: 0;
}
.markdown-body blockquote > :last-child {
  margin-bottom: 0;
}
.markdown-body .loweralpha {
  list-style-type: lower-alpha;
}
.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;
}
.night .markdown-body h1,
.night .markdown-body h2,
.night .markdown-body h3,
.night .markdown-body h4,
.night .markdown-body h5,
.night .markdown-body h6 {
  color: #ddd;
}
.markdown-body h1 .fa-link,
.markdown-body h2 .fa-link,
.markdown-body h3 .fa-link,
.markdown-body h4 .fa-link,
.markdown-body h5 .fa-link,
.markdown-body h6 .fa-link {
  color: #000;
  vertical-align: middle;
  visibility: hidden;
  font-size: 16px;
}
.night .markdown-body h1 .fa-link,
.night .markdown-body h2 .fa-link,
.night .markdown-body h3 .fa-link,
.night .markdown-body h4 .fa-link,
.night .markdown-body h5 .fa-link,
.night .markdown-body h6 .fa-link {
  color: #fff;
}
.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 .fa-link,
.markdown-body h2:hover .anchor .fa-link,
.markdown-body h3:hover .anchor .fa-link,
.markdown-body h4:hover .anchor .fa-link,
.markdown-body h5:hover .anchor .fa-link,
.markdown-body h6:hover .anchor .fa-link {
  visibility: visible;
}
.markdown-body h1 code,
.markdown-body h1 tt,
.markdown-body h2 code,
.markdown-body h2 tt,
.markdown-body h3 code,
.markdown-body h3 tt,
.markdown-body h4 code,
.markdown-body h4 tt,
.markdown-body h5 code,
.markdown-body h5 tt,
.markdown-body h6 code,
.markdown-body h6 tt {
  font-size: inherit;
}
.markdown-body h1 {
  font-size: 2em;
}
.markdown-body h1,
.markdown-body h2 {
  padding-bottom: 0.3em;
  border-bottom: 1px solid #eee;
}
.markdown-body h2 {
  font-size: 1.5em;
}
.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: #777;
}
.markdown-body ol,
.markdown-body ul {
  padding-left: 2em;
}
.markdown-body ol.no-list,
.markdown-body ul.no-list {
  padding: 0;
  list-style-type: none;
}
.markdown-body ol ol,
.markdown-body ol ul,
.markdown-body ul ol,
.markdown-body ul ul {
  margin-top: 0;
  margin-bottom: 0;
}
.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: 700;
}
.markdown-body dl dd {
  padding: 0 16px;
  margin-bottom: 16px;
}
.markdown-body table {
  display: block;
  width: 100%;
  overflow: auto;
  word-break: normal;
  word-break: keep-all;
}
.markdown-body table th {
  font-weight: 700;
}
.markdown-body table td,
.markdown-body table th {
  padding: 6px 13px;
  border: 1px solid #ddd;
}
.markdown-body table tr {
  background-color: #fff;
  border-top: 1px solid #ccc;
}
.night .markdown-body table tr {
  background-color: #5f5f5f;
}
.markdown-body table tr:nth-child(2n) {
  background-color: #f8f8f8;
}
.night .markdown-body table tr:nth-child(2n) {
  background-color: #4f4f4f;
}
.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 .emoji {
  max-width: none;
  vertical-align: text-top;
  background-color: transparent;
}
.markdown-body span.frame {
  display: block;
  overflow: hidden;
}
.markdown-body span.frame > span {
  display: block;
  float: left;
  width: auto;
  padding: 7px;
  margin: 13px 0 0;
  overflow: hidden;
  border: 1px solid #ddd;
}
.markdown-body span.frame span img {
  display: block;
  float: left;
}
.markdown-body span.frame span span {
  display: block;
  padding: 5px 0 0;
  clear: both;
  color: #333;
}
.markdown-body span.align-center {
  display: block;
  overflow: hidden;
  clear: both;
}
.markdown-body span.align-center > span {
  display: block;
  margin: 13px auto 0;
  overflow: hidden;
  text-align: center;
}
.markdown-body span.align-center span img {
  margin: 0 auto;
  text-align: center;
}
.markdown-body span.align-right {
  display: block;
  overflow: hidden;
  clear: both;
}
.markdown-body span.align-right > span {
  display: block;
  margin: 13px 0 0;
  overflow: hidden;
  text-align: right;
}
.markdown-body span.align-right span img {
  margin: 0;
  text-align: right;
}
.markdown-body span.float-left {
  display: block;
  float: left;
  margin-right: 13px;
  overflow: hidden;
}
.markdown-body span.float-left span {
  margin: 13px 0 0;
}
.markdown-body span.float-right {
  display: block;
  float: right;
  margin-left: 13px;
  overflow: hidden;
}
.markdown-body span.float-right > span {
  display: block;
  margin: 13px auto 0;
  overflow: hidden;
  text-align: right;
}
.markdown-body code,
.markdown-body tt {
  padding: 0.2em 0;
  margin: 0;
  font-size: 85%;
  background-color: rgba(0, 0, 0, 0.04);
  border-radius: 3px;
}
.night .markdown-body code,
.night .markdown-body tt {
  color: #eee;
  background-color: hsla(0, 0%, 90.2%, 0.36);
}
.markdown-body code:after,
.markdown-body code:before,
.markdown-body tt:after,
.markdown-body tt:before {
  letter-spacing: -0.2em;
  content: "\A0";
}
.markdown-body code br,
.markdown-body tt br {
  display: none;
}
.markdown-body del code {
  text-decoration: inherit;
}
.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: #f7f7f7;
  border-radius: 3px;
}
.markdown-body pre code,
.markdown-body pre tt {
  display: inline;
  max-width: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  line-height: inherit;
  word-wrap: normal;
  background-color: transparent;
  border: 0;
}
.markdown-body pre code:after,
.markdown-body pre code:before,
.markdown-body pre tt:after,
.markdown-body pre tt:before {
  content: normal;
}
.markdown-body .csv-data td,
.markdown-body .csv-data th {
  padding: 5px;
  overflow: hidden;
  font-size: 12px;
  line-height: 1;
  text-align: left;
  white-space: nowrap;
}
.markdown-body .csv-data .blob-line-num {
  padding: 10px 8px 9px;
  text-align: right;
  background: #fff;
  border: 0;
}
.markdown-body .csv-data tr {
  border-top: 0;
}
.markdown-body .csv-data th {
  font-weight: 700;
  background: #f8f8f8;
  border-top: 0;
}
.markdown-body kbd {
  display: inline-block;
  padding: 3px 5px;
  font-size: 11px;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: 1px solid;
  border-color: #ccc #ccc #bbb;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 #bbb;
}
.news .alert .markdown-body blockquote {
  padding: 0 0 0 40px;
  border: 0;
}
.activity-tab .news .alert .commits,
.activity-tab .news .markdown-body blockquote {
  padding-left: 0;
}
.task-list-item {
  list-style-type: none;
}
.task-list-item label {
  font-weight: 400;
}
.task-list-item.enabled label {
  cursor: pointer;
}
.task-list-item + .task-list-item {
  margin-top: 3px;
}
.task-list-item-checkbox {
  float: left;
  margin: 0.31em 0 0.2em -1.3em !important;
  vertical-align: middle;
  cursor: default !important;
}
.markdown-body {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto,
    Helvetica Neue, Helvetica, Arial, sans-serif, Apple Color Emoji,
    Segoe UI Emoji, Segoe UI Symbol;
  padding-top: 40px;
  padding-bottom: 40px;
  max-width: 758px;
  overflow: visible !important;
}
.markdown-body pre {
  border: inherit !important;
}
.night .markdown-body pre {
  filter: invert(100%);
}
.markdown-body code {
  color: inherit !important;
}
.markdown-body pre code .wrapper {
  display: -webkit-inline-flex;
  display: -moz-inline-flex;
  display: -ms-inline-flex;
  display: -o-inline-flex;
  display: inline-flex;
}
.markdown-body pre code .gutter {
  float: left;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}
.markdown-body pre code .gutter.linenumber {
  text-align: right;
  position: relative;
  display: inline-block;
  cursor: default;
  z-index: 4;
  padding: 0 8px 0 0;
  min-width: 20px;
  box-sizing: content-box;
  color: #afafaf !important;
  border-right: 3px solid #6ce26c !important;
}
.markdown-body pre code .gutter.linenumber > span:before {
  content: attr(data-linenumber);
}
.markdown-body pre code .code {
  float: left;
  margin: 0 0 0 16px;
}
.markdown-body .gist .line-numbers {
  border-left: none;
  border-top: none;
  border-bottom: none;
}
.markdown-body .gist .line-data {
  border: none;
}
.markdown-body .gist table {
  border-spacing: 0;
  border-collapse: inherit !important;
}
.night .markdown-body .gist table tr:nth-child(2n) {
  background-color: #ddd;
}
.markdown-body code[data-gist-id] {
  background: none;
  padding: 0;
  filter: invert(100%);
}
.markdown-body code[data-gist-id]:after,
.markdown-body code[data-gist-id]:before {
  content: "";
}
.markdown-body code[data-gist-id] .blob-num {
  border: unset;
}
.markdown-body code[data-gist-id] table {
  overflow: unset;
  margin-bottom: unset;
}
.markdown-body code[data-gist-id] table tr {
  background: unset;
}
.markdown-body[dir="rtl"] pre {
  direction: ltr;
}
.markdown-body[dir="rtl"] code {
  direction: ltr;
  unicode-bidi: embed;
}
.markdown-body .alert > p {
  margin-bottom: 0;
}
.markdown-body pre.abc,
.markdown-body pre.flow-chart,
.markdown-body pre.graphviz,
.markdown-body pre.mermaid,
.markdown-body pre.sequence-diagram {
  text-align: center;
  background-color: inherit;
  border-radius: 0;
  white-space: inherit;
}
.night .markdown-body pre.graphviz .graph > polygon {
  fill: #333;
}
.night .markdown-body pre.mermaid .sectionTitle,
.night .markdown-body pre.mermaid .titleText,
.night .markdown-body pre.mermaid text {
  fill: #fff;
}
.markdown-body pre.abc > code,
.markdown-body pre.flow-chart > code,
.markdown-body pre.graphviz > code,
.markdown-body pre.mermaid > code,
.markdown-body pre.sequence-diagram > code {
  text-align: left;
}
.markdown-body pre.abc > svg,
.markdown-body pre.flow-chart > svg,
.markdown-body pre.graphviz > svg,
.markdown-body pre.mermaid > svg,
.markdown-body pre.sequence-diagram > svg {
  max-width: 100%;
  height: 100%;
}
.night .markdown-body .abc path {
  fill: #eee;
}
.night .markdown-body .abc path.note_selected {
  fill: #4dd0e1;
}
.night tspan {
  fill: #fefefe;
}
.night pre rect {
  fill: transparent;
}
.night pre.flow-chart path,
.night pre.flow-chart rect {
  stroke: #fff;
}
.markdown-body pre > code.wrap {
  white-space: pre-wrap;
  white-space: -moz-pre-wrap;
  white-space: -pre-wrap;
  white-space: -o-pre-wrap;
  word-wrap: break-word;
}
.markdown-body .alert > p,
.markdown-body .alert > ul {
  margin-bottom: 0;
}
.markdown-body summary {
  display: list-item;
}
.markdown-body summary:focus {
  outline: none;
}
.markdown-body details summary {
  cursor: pointer;
}
.markdown-body details:not([open]) > :not(summary) {
  display: none;
}
.markdown-body figure {
  margin: 1em 40px;
}
.markdown-body img {
  background-color: transparent;
}
.vimeo,
.youtube {
  cursor: pointer;
  display: table;
  text-align: center;
  background-position: 50%;
  background-repeat: no-repeat;
  background-size: contain;
  background-color: #000;
  overflow: hidden;
}
.vimeo,
.youtube {
  position: relative;
  width: 100%;
}
.youtube {
  padding-bottom: 56.25%;
}
.vimeo img {
  width: 100%;
  object-fit: contain;
  z-index: 0;
}
.youtube img {
  object-fit: cover;
  z-index: 0;
}
.vimeo iframe,
.youtube iframe,
.youtube img {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.vimeo iframe,
.youtube iframe {
  vertical-align: middle;
  z-index: 1;
}
.vimeo .icon,
.youtube .icon {
  position: absolute;
  height: auto;
  width: auto;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  opacity: 0.3;
  -webkit-transition: opacity 0.2s;
  transition: opacity 0.2s;
  z-index: 0;
}
.vimeo:hover .icon,
.youtube:hover .icon {
  opacity: 0.6;
  -webkit-transition: opacity 0.2s;
  transition: opacity 0.2s;
}
.slideshare .inner,
.speakerdeck .inner {
  position: relative;
  width: 100%;
}
.slideshare .inner iframe,
.speakerdeck .inner iframe {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 100%;
}
.MJX_Assistive_MathML {
  display: none;
}
.ui-infobar {
  position: relative;
  z-index: 2;
  max-width: 758px;
  margin-top: 25px;
  margin-bottom: -25px;
  color: #777;
}
.toc .invisable-node {
  list-style-type: none;
}
.ui-toc {
  position: fixed;
  bottom: 20px;
  z-index: 10000;
}
.ui-toc-label {
  opacity: 0.3;
  background-color: #ccc;
  border: none;
}
.ui-toc-label,
.ui-toc .open .ui-toc-label {
  -webkit-transition: opacity 0.2s;
  transition: opacity 0.2s;
}
.ui-toc .open .ui-toc-label {
  opacity: 1;
  color: #fff;
}
.ui-toc-label:focus {
  opacity: 0.3;
  background-color: #ccc;
  color: #000;
}
.ui-toc-label:hover {
  opacity: 1;
  background-color: #ccc;
  -webkit-transition: opacity 0.2s;
  transition: opacity 0.2s;
}
.ui-toc-dropdown {
  margin-top: 23px;
  margin-bottom: 20px;
  padding-left: 10px;
  padding-right: 10px;
  max-width: 45vw;
  width: 25vw;
  max-height: 70vh;
  overflow: auto;
  text-align: inherit;
}
.ui-toc-dropdown > .toc {
  max-height: calc(70vh - 100px);
  overflow: auto;
}
.ui-toc-dropdown[dir="rtl"] .nav {
  padding-right: 0;
  letter-spacing: 0.0029em;
}
.ui-toc-dropdown a {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: pre;
}
.ui-toc-dropdown .nav > li > a {
  display: block;
  padding: 4px 20px;
  font-size: 13px;
  font-weight: 500;
  color: #767676;
}
.ui-toc-dropdown .nav > li:first-child:last-child > ul,
.ui-toc-dropdown .toc.expand ul {
  display: block;
}
.ui-toc-dropdown .nav > li > a:focus,
.ui-toc-dropdown .nav > li > a:hover {
  padding-left: 19px;
  color: #000;
  text-decoration: none;
  background-color: transparent;
  border-left: 1px solid #000;
}
.night .ui-toc-dropdown .nav > li > a:focus,
.night .ui-toc-dropdown .nav > li > a:hover {
  color: #fff;
  border-left-color: #fff;
}
.ui-toc-dropdown[dir="rtl"] .nav > li > a:focus,
.ui-toc-dropdown[dir="rtl"] .nav > li > a:hover {
  padding-right: 19px;
  border-left: none;
  border-right: 1px solid #000;
}
.ui-toc-dropdown .nav > .active:focus > a,
.ui-toc-dropdown .nav > .active:hover > a,
.ui-toc-dropdown .nav > .active > a {
  padding-left: 18px;
  font-weight: 700;
  color: #000;
  background-color: transparent;
  border-left: 2px solid #000;
}
.night .ui-toc-dropdown .nav > .active:focus > a,
.night .ui-toc-dropdown .nav > .active:hover > a,
.night .ui-toc-dropdown .nav > .active > a {
  color: #fff;
  border-left: 2px solid #fff;
}
.ui-toc-dropdown[dir="rtl"] .nav > .active:focus > a,
.ui-toc-dropdown[dir="rtl"] .nav > .active:hover > a,
.ui-toc-dropdown[dir="rtl"] .nav > .active > a {
  padding-right: 18px;
  border-left: none;
  border-right: 2px solid #000;
}
.ui-toc-dropdown .nav .nav {
  display: none;
  padding-bottom: 10px;
}
.ui-toc-dropdown .nav > .active > ul {
  display: block;
}
.ui-toc-dropdown .nav .nav > li > a {
  padding-top: 1px;
  padding-bottom: 1px;
  padding-left: 30px;
  font-size: 12px;
  font-weight: 400;
}
.night .ui-toc-dropdown .nav > li > a {
  color: #aaa;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > a {
  padding-right: 30px;
}
.ui-toc-dropdown .nav .nav > li > ul > li > a {
  padding-top: 1px;
  padding-bottom: 1px;
  padding-left: 40px;
  font-size: 12px;
  font-weight: 400;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > ul > li > a {
  padding-right: 40px;
}
.ui-toc-dropdown .nav .nav > li > a:focus,
.ui-toc-dropdown .nav .nav > li > a:hover {
  padding-left: 29px;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > a:focus,
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > a:hover {
  padding-right: 29px;
}
.ui-toc-dropdown .nav .nav > li > ul > li > a:focus,
.ui-toc-dropdown .nav .nav > li > ul > li > a:hover {
  padding-left: 39px;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > ul > li > a:focus,
.ui-toc-dropdown[dir="rtl"] .nav .nav > li > ul > li > a:hover {
  padding-right: 39px;
}
.ui-toc-dropdown .nav .nav > .active:focus > a,
.ui-toc-dropdown .nav .nav > .active:hover > a,
.ui-toc-dropdown .nav .nav > .active > a {
  padding-left: 28px;
  font-weight: 500;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active:focus > a,
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active:hover > a,
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active > a {
  padding-right: 28px;
}
.ui-toc-dropdown .nav .nav > .active > .nav > .active:focus > a,
.ui-toc-dropdown .nav .nav > .active > .nav > .active:hover > a,
.ui-toc-dropdown .nav .nav > .active > .nav > .active > a {
  padding-left: 38px;
  font-weight: 500;
}
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active > .nav > .active:focus > a,
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active > .nav > .active:hover > a,
.ui-toc-dropdown[dir="rtl"] .nav .nav > .active > .nav > .active > a {
  padding-right: 38px;
}
.markdown-body[lang^="ja"] {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto,
    Helvetica Neue, Helvetica, Arial, Hiragino Kaku Gothic Pro,
    "\30D2\30E9\30AE\30CE\89D2\30B4   Pro W3", Osaka, Meiryo,
    "\30E1\30A4\30EA\30AA", MS Gothic, "\FF2D\FF33   \30B4\30B7\30C3\30AF",
    sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol;
}
.ui-toc-dropdown[lang^="ja"] {
  font-family: Source Sans Pro, Helvetica, Arial, Meiryo UI, MS PGothic,
    "\FF2D\FF33   \FF30\30B4\30B7\30C3\30AF", sans-serif;
}
.markdown-body[lang="zh-tw"] {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto,
    Helvetica Neue, Helvetica, Arial, PingFang TC, Microsoft JhengHei,
    "\5FAE\8EDF\6B63\9ED1", sans-serif, Apple Color Emoji, Segoe UI Emoji,
    Segoe UI Symbol;
}
.ui-toc-dropdown[lang="zh-tw"] {
  font-family: Source Sans Pro, Helvetica, Arial, Microsoft JhengHei UI,
    "\5FAE\8EDF\6B63\9ED1UI", sans-serif;
}
.markdown-body[lang="zh-cn"] {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto,
    Helvetica Neue, Helvetica, Arial, PingFang SC, Microsoft YaHei,
    "\5FAE\8F6F\96C5\9ED1", sans-serif, Apple Color Emoji, Segoe UI Emoji,
    Segoe UI Symbol;
}
.ui-toc-dropdown[lang="zh-cn"] {
  font-family: Source Sans Pro, Helvetica, Arial, Microsoft YaHei UI,
    "\5FAE\8F6F\96C5\9ED1UI", sans-serif;
}
.ui-affix-toc {
  position: fixed;
  top: 0;
  max-width: 15vw;
  max-height: 70vh;
  overflow: auto;
}
.back-to-top,
.expand-toggle,
.go-to-bottom {
  display: block;
  padding: 4px 10px;
  margin-top: 10px;
  margin-left: 10px;
  font-size: 12px;
  font-weight: 500;
  color: #999;
}
.back-to-top:focus,
.back-to-top:hover,
.expand-toggle:focus,
.expand-toggle:hover,
.go-to-bottom:focus,
.go-to-bottom:hover {
  color: #563d7c;
  text-decoration: none;
}
.back-to-top,
.go-to-bottom {
  margin-top: 0;
}
.ui-user-icon {
  width: 20px;
  height: 20px;
  display: block;
  border-radius: 3px;
  margin-top: 2px;
  margin-bottom: 2px;
  margin-right: 5px;
  background-position: 50%;
  background-repeat: no-repeat;
  background-size: contain;
}
.ui-user-icon.small {
  width: 18px;
  height: 18px;
  display: inline-block;
  vertical-align: middle;
  margin: 0 0 0.2em;
}
small span {
  line-height: 22px;
}
small .dropdown {
  display: inline-block;
}
small .dropdown a:focus,
small .dropdown a:hover {
  text-decoration: none;
}
.unselectable {
  -moz-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -o-user-select: none;
  user-select: none;
}
.night .navbar {
  background: #333;
  border-bottom-color: #333;
  color: #eee;
}
.night .navbar a {
  color: #eee;
}
.markdown-body h1[id]:before,
.markdown-body h2[id]:before,
.markdown-body h3[id]:before,
.markdown-body h4[id]:before,
.markdown-body h5[id]:before,
.markdown-body h6[id]:before {
  display: block;
  content: " ";
  margin-top: -55px;
  height: 55px;
  visibility: hidden;
}
@media print {
  blockquote,
  div,
  img,
  pre,
  table {
    page-break-inside: avoid !important;
  }
  a[href]:after {
    font-size: 12px !important;
  }
}
.markdown-body.slides {
  position: relative;
  z-index: 1;
  color: #222;
}
.markdown-body.slides:before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background-color: currentColor;
  box-shadow: 0 0 0 50vw;
}
.markdown-body.slides section[data-markdown] {
  position: relative;
  margin-bottom: 1.5em;
  background-color: #fff;
  text-align: center;
}
.markdown-body.slides section[data-markdown] code {
  text-align: left;
}
.markdown-body.slides section[data-markdown]:before {
  content: "";
  display: block;
  padding-bottom: 56.23%;
}
.markdown-body.slides section[data-markdown] > div:first-child {
  position: absolute;
  top: 50%;
  left: 1em;
  right: 1em;
  transform: translateY(-50%);
  max-height: 100%;
  overflow: hidden;
}
.markdown-body.slides section[data-markdown] > ul {
  display: inline-block;
}
.markdown-body.slides > section > section + section:after {
  content: "";
  position: absolute;
  top: -1.5em;
  right: 1em;
  height: 1.5em;
  border: 3px solid #777;
}
.markdown-body.slides aside.notes {
  display: none;
}
.markdown-body.slides ol,
.markdown-body.slides ul {
  display: inline-block;
  text-align: left;
  margin: 0 0 0 1em;
  padding: 0;
}
.markdown-body.slides table {
  width: 50%;
  margin: 0 auto;
  border-collapse: collapse;
  border-spacing: 0;
  display: table;
}
.markdown-body.slides table td,
.markdown-body.slides table th {
  text-align: left;
  padding: 0.2em 0.5em;
  border: none;
  border-bottom: 1px solid;
}
.markdown-body.slides table tr {
  border-top: 0;
  background-color: #fff;
}
.markdown-body.slides table tr:nth-child(2n) {
  background-color: inherit;
}
.markdown-body.slides table tbody tr:last-child td,
.markdown-body.slides table tbody tr:last-child th {
  border-bottom: none;
}
.markdown-body.slides h1,
.markdown-body.slides h2 {
  border-bottom: 0;
}
.night .markdown-body.slides h1,
.night .markdown-body.slides h2,
.night .markdown-body.slides h3,
.night .markdown-body.slides h4,
.night .markdown-body.slides h5,
.night .markdown-body.slides h6 {
  color: #000;
}
.markdown-body section > section:last-child {
  margin-bottom: 1.5em !important;
}
.ui-view-area.black {
  background-color: #000 !important;
}
body {
  font-smoothing: subpixel-antialiased !important;
  -webkit-font-smoothing: subpixel-antialiased !important;
  -moz-osx-font-smoothing: auto !important;
  text-shadow: 0 0 1em transparent, 1px 1px 1.2px rgba(0, 0, 0, 0.004);
  -webkit-overflow-scrolling: touch;
  font-family: Source Sans Pro, Helvetica, Arial, sans-serif;
  letter-spacing: 0.025em;
}
.focus,
:focus {
  outline: none !important;
}
::-moz-focus-inner {
  border: 0 !important;
}
body.modal-open {
  overflow-y: auto;
  padding-right: 0 !important;
}