.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;
    /*下面这句代码老是报错，注释掉后，发现不影响网站*/
    /*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;
    border-bottom: 1px solid #eee
}

.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 .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: #333
}

.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: #777
}

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

.site-header-nav-item:hover {
    color: #333;
    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: 20px; /* 页面底部距离 */
    font-size: 12px;
    line-height: 1.5;
    color: #777;
    border-top: 1px solid #eee
}

.markdown-body h1, .markdown-body h2 {
    padding-bottom: .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: .2em 0;
    margin: 0;
    font-size: 85%;
    background-color: rgba(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: -.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;
}

.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;
    }
}