.site-header,
.site-header-actions .select-menu {
  position: relative;
}

.markdown-body,
body {
  font-family: Arial, "Hiragino Sans GB", "冬青黑", "Microsoft YaHei",
    "微软雅黑", SimSun, "宋体", Helvetica, Tahoma, Arial sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-wrap: break-word;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -webkit-backface-visibility: hidden;
}

@font-face {
  font-family: octicons;
  src: font-url(../fonts/octicons.eot?#iefix) format("embedded-opentype"),
    font-url(../fonts/octicons.woff) format("woff"),
    font-url(../fonts/octicons.ttf) format("truetype"),
    font-url(../fonts/octicons.svg#octicons) format("svg");
  font-weight: 400;
  font-style: normal;
}

.pagination {
  padding: 20px 0;
}

.pagination a.active {
  background: #337ab7;
  border-color: #337ab7;
  z-index: 2;
  color: #fff;
  cursor: default;
}

.text-center {
  text-align: center;
}

.btn-inline .btn {
  margin: 5px;
}

.site-header {
  padding-top: 20px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  background: #4183c4;
  color: #fff;
}

.site-header .account-switcher {
  display: inline-block;
  margin-top: -2px;
  margin-bottom: -6px;
}

.site-header-actions .select-menu:after,
.site-header-actions .select-menu:before {
  display: table;
  content: "";
}

.site-header ul.site-header-actions {
  z-index: 21;
  float: right;
  margin: 0;
}

.site-header ul.site-header-actions .feed-icon {
  margin-top: 5px;
}

.site-header .path-divider {
  margin: 0 0.25em;
}

.site-header h1 {
  float: left;
}

.site-header h1,
.site-header h1 .octicon {
  margin-top: 0;
  margin-bottom: 0;
  font-size: 32px;
  font-weight: 400;
  line-height: 28px;
  vertical-align: top;
}

.markdown-body dl dt,
.markdown-body table th,
.pl-mb,
.pl-mdr,
.pl-mh,
.pl-mh .pl-en,
.pl-ms,
.pl-sr .pl-cce,
.site-header h1 strong {
  font-weight: 700;
}

.site-header h1 a {
  white-space: nowrap;
  color: #fff;
}

.site-header h1 a:hover {
  text-decoration: none;
}

.site-header h1 .avatar {
  margin-top: -2px;
  margin-right: 9px;
  margin-bottom: -2px;
}

.site-header-actions > li {
  float: left;
  margin: 0 10px 0 0;
  font-size: 11px;
  color: #333;
  list-style-type: none;
}

.site-header-actions > li:last-child {
  margin-right: 0;
}

.site-header-actions .octicon-mute {
  color: #c00;
}

.site-header-actions .select-menu:after {
  clear: both;
}

.site-header-actions .select-menu-modal-holder {
  top: 100%;
}

.site-header-nav {
  float: right;
  margin-bottom: -20px;
}

.site-header-nav-item {
  display: inline-block;
  padding: 6px 10px 15px;
  margin-left: 1.25rem;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer:after,
.site-footer:before {
  display: table;
  content: "";
}

.site-header-nav-item:hover {
  color: #fff;
  text-decoration: none;
}

.site-header-nav-item.selected {
  color: #333;
  padding: 6px 10px 13px;
  border-bottom: 2px solid #d26911;
}

.site-header-nav-item + .btn-outline {
  margin-top: -1px;
  margin-left: 20px;
}

.site-footer {
  position: relative;
  margin-top: 40px;
  padding-top: 40px;
  padding-bottom: 40px;
  font-size: 12px;
  line-height: 1.5;
  color: #777;
  border-top: 1px solid #eee;
}

.markdown-body h1,
.markdown-body h2 {
  padding-bottom: 0.3em;
  border-bottom: 1px solid #eee;
}

.site-footer .copyright {
  padding-right: 20px;
}

.site-footer:after {
  clear: both;
}

.site-footer .octicon-mark-github {
  position: absolute;
  top: 38px;
  left: 50%;
  height: 24px;
  width: 24px;
  margin-left: -12px;
  font-size: 24px;
  color: #ccc;
}

.site-footer .octicon-mark-github:hover {
  color: #bbb;
}

.site-footer-links {
  margin: 0;
  list-style: none;
}

.site-footer-links li {
  display: inline-block;
  line-height: 16px;
}

.site-footer-links li + li {
  margin-left: 10px;
}

.share {
  margin: 20px 0;
}

.markdown-body {
  overflow: hidden;
}

.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 {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  padding-right: 6px;
  padding-left: 30px;
  margin-left: -30px;
}

.markdown-body .anchor:focus {
  outline: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  position: relative;
  margin-top: 1em;
  margin-bottom: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.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 {
  display: none;
  color: #000;
  vertical-align: middle;
}

.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 {
  padding-left: 8px;
  margin-left: -30px;
  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 {
  display: inline-block;
}

.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: 2.25em;
  line-height: 1.2;
}

.markdown-body h1 .anchor {
  line-height: 1;
}

.markdown-body h2 {
  font-size: 1.75em;
  line-height: 1.225;
}

.markdown-body h2 .anchor {
  line-height: 1;
}

.markdown-body h3 {
  font-size: 1.5em;
  line-height: 1.43;
}

.markdown-body h3 .anchor,
.markdown-body h4 .anchor {
  line-height: 1.2;
}

.markdown-body h4 {
  font-size: 1.25em;
}

.markdown-body h5 .anchor,
.markdown-body h6 .anchor {
  line-height: 1.1;
}

.markdown-body h5 {
  font-size: 1em;
}

.markdown-body h6 {
  font-size: 1em;
  color: #777;
}

.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: 4px;
  padding: 0;
  margin: 16px 0;
  background-color: #e7e7e7;
  border: 0;
}

.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 dl {
  padding: 0;
}

.markdown-body dl dt {
  padding: 0;
  margin-top: 16px;
  font-size: 1em;
  font-style: italic;
}

.markdown-body dl dd {
  padding: 0 16px;
  margin-bottom: 16px;
}

.markdown-body blockquote {
  padding: 0 15px;
  color: #777;
  border-left: 4px solid #ddd;
}

.markdown-body blockquote > :first-child {
  margin-top: 0;
}

.markdown-body blockquote > :last-child {
  margin-bottom: 0;
}

.markdown-body table {
  display: block;
  width: 100%;
  overflow: auto;
  word-break: normal;
  word-break: keep-all;
}

.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;
}

.markdown-body table tr:nth-child(2n) {
  background-color: #f8f8f8;
}

.markdown-body img {
  max-width: 100%;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

.markdown-body .emoji {
  max-width: none;
}

.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 */
}

.markdown-body code:after,
.markdown-body code:before,
.markdown-body tt:after,
.markdown-body tt:before {
  letter-spacing: -0.2em;
  content: " ";
}

.markdown-body code br,
.markdown-body tt br {
  display: none;
}

.markdown-body del code {
  text-decoration: inherit;
}

.markdown-body pre > code {
  padding: 0;
  margin: 0;
  font-size: 100%;
  word-break: normal;
  white-space: pre;
  background: 0 0;
  border: 0;
}

.markdown-body .highlight {
  margin-bottom: 16px;
}

.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 .highlight pre {
  margin-bottom: 0;
  word-break: normal;
}

.markdown-body pre {
  word-wrap: normal;
}

.markdown-body pre code,
.markdown-body pre tt {
  display: inline;
  max-width: initial;
  padding: 0;
  margin: 0;
  overflow: initial;
  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 kbd {
  display: inline-block;
  padding: 3px 5px;
  font-size: 11px;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: 1px solid #ccc;
  border-bottom-color: #bbb;
  /* border-radius: 3px; */
  -webkit-box-shadow: inset 0 -1px 0 #bbb;
  box-shadow: inset 0 -1px 0 #bbb;
}

.pl-c {
  color: #969896;
}

.pl-c1,
.pl-s .pl-v {
  color: #0086b3;
}

.pl-e,
.pl-en {
  color: #795da3;
}

.pl-s .pl-s1,
.pl-smi {
  color: #333;
}

.pl-ent {
  color: #63a35c;
}

.pl-k {
  color: #a71d5d;
}

.pl-pds,
.pl-s,
.pl-s .pl-pse .pl-s1,
.pl-sr,
.pl-sr .pl-cce,
.pl-sr .pl-sra,
.pl-sr .pl-sre {
  color: #183691;
}

.pl-v {
  color: #ed6a43;
}

.pl-id {
  color: #b52a1d;
}

.pl-ii {
  background-color: #b52a1d;
  color: #f8f8f8;
}

.pl-sr .pl-cce {
  color: #63a35c;
}

.pl-ml {
  color: #693a17;
}

.pl-mh,
.pl-mh .pl-en,
.pl-ms {
  color: #1d3e81;
}

.pl-mq {
  color: teal;
}

.pl-mi {
  color: #333;
  font-style: italic;
}

.pl-mb {
  color: #333;
}

.pl-md {
  background-color: #ffecec;
  color: #bd2c00;
}

.pl-mi1 {
  background-color: #eaffea;
  color: #55a532;
}

.pl-mdr {
  color: #795da3;
}

.pl-mo {
  color: #1d3e81;
}

pre {
  border: 1px solid #ccc;
}

.tools-wrapper {
  position: fixed;
  right: 1em;
  bottom: 3.4375em;
  z-index: 9;
  width: 2.5em;
}

.tools-wrapper a {
  color: #999;
  text-align: center;
  margin-bottom: -1px;
  background: rgba(255, 255, 255, 32);
}

.tools-wrapper span.octicon {
  font-size: 1.5em;
}

.tools-wrapper .gotop {
  display: none;
}

.top-most-flag {
  color: red;
}

a.footnote:hover {
  border-bottom: none;
}

a.footnote::before {
  content: "[";
  padding: 0 2px;
}

a.footnote::after {
  content: "]";
  padding: 0 2px;
}

div.footnotes > ol {
  padding-left: 1.5rem;
  font-size: 0.9rem;
}

div.footnotes > ol p {
  margin-bottom: 0.5rem;
}

div.footnotes::before {
  content: "";
  display: block;
  margin: 1.5rem 0;
  border: 0;
  border-top: 1px solid #ccc;
  width: 20%;
}

img + em {
  color: grey;
  display: block;
}

.content-header-ad {
  display: inline-block;
  width: 320px;
  height: 50px;
}
@media (max-width: 400px) {
  .content-header-ad {
    display: none;
  }
}
@media (min-width: 500px) {
  .content-header-ad {
    width: 468px;
    height: 60px;
  }
}
@media (min-width: 800px) {
  .content-header-ad {
    width: 728px;
    height: 90px;
  }
}