html { font-size: 100%; overflow-y: scroll; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; }

body{
  color:#444;
  font-family: Arial, 'Open Sans', Georgia, Palatino, 'Palatino Linotype', Times, 'Times New Roman',
              "Hiragino Sans GB", "STXihei", "微软雅黑", serif;
  font-size:12px;
  line-height:1.5em;
  background:#fefefe;
  width: 48em;
  margin: 10px 0 10px 300px;
  padding: 1em;
  outline: 1300px solid #FAFAFA;
}

a{ color: #0645ad; text-decoration:none;}
a:visited{ color: #0b0080; }
a:hover{ color: #06e; }
a:active{ color:#faa700; }
a:focus{ outline: thin dotted; }
a:hover, a:active{ outline: 0; }

span.backtick {
  border:1px solid #EAEAEA;
  border-radius:3px;
  background:#F8F8F8;
  padding:0 3px 0 3px;
}

::-moz-selection{background:rgba(255,255,0,0.3);color:#000}
::selection{background:rgba(255,255,0,0.3);color:#000}

a::-moz-selection{background:rgba(255,255,0,0.3);color:#0645ad}
a::selection{background:rgba(255,255,0,0.3);color:#0645ad}

p{
margin:1em 0;
}

img{
max-width:100%;
}

h1,h2,h3,h4,h5,h6{
font-weight:normal;
color:#111;
line-height:1em;
}
h4,h5,h6{ font-weight: bold; }
h1{ font-size:2.5em; }
h2{ font-size:2em; border-bottom:1px solid silver; padding-bottom: 10px; margin-top: 2em;}
h3{ font-size:1.5em; }
h4{ font-size:1.2em; }
h5{ font-size:1em; }
h6{ font-size:0.9em; }

blockquote{
color:#666666;
margin:0;
padding-left: 3em;
border-left: 0.5em #EEE solid;
}
hr { display: block; height: 2px; border: 0; border-top: 1px solid #aaa;border-bottom: 1px solid #eee; margin: 1em 0; padding: 0; }


pre , code, kbd, samp { 
  color: #000; 
  font-family: monospace; 
  font-size: 0.88em; 
  border-radius:3px;
  background-color: #F8F8F8;
  border: 1px solid #CCC; 
}
pre { white-space: pre; white-space: pre-wrap; word-wrap: break-word; padding: 5px 12px;}
pre code { border: 0px !important; padding: 0;}
code { padding: 0 3px 0 3px; }

b, strong { font-weight: bold; }

dfn { font-style: italic; }

ins { background: #ff9; color: #000; text-decoration: none; }

mark { background: #ff0; color: #000; font-style: italic; font-weight: bold; }

sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }
sup { top: -0.5em; }
sub { bottom: -0.25em; }

ul, ol { margin: 1em 0; padding: 0 0 0 2em; }
li p:last-child { margin:0 }
dd { margin: 0 0 0 2em; }

img { border: 0; -ms-interpolation-mode: bicubic; vertical-align: middle; }

table { border-collapse: collapse; border-spacing: 0; }
td { vertical-align: top; }

@media only screen and (min-width: 480px) {
body{font-size:14px;}
}

@media only screen and (min-width: 768px) {
body{font-size:16px;}
}

@media print {
  * { background: transparent !important; color: black !important; filter:none !important; -ms-filter: none !important; }
  body{font-size:12pt; max-width:100%; outline:none;}
  a, a:visited { text-decoration: underline; }
  hr { height: 1px; border:0; border-bottom:1px solid black; }
  a[href]:after { content: " (" attr(href) ")"; }
  abbr[title]:after { content: " (" attr(title) ")"; }
  .ir a:after, a[href^="javascript:"]:after, a[href^="#"]:after { content: ""; }
  pre, blockquote { border: 1px solid #999; padding-right: 1em; page-break-inside: avoid; }
  tr, img { page-break-inside: avoid; }
  img { max-width: 100% !important; }
  @page :left { margin: 15mm 20mm 15mm 10mm; }
  @page :right { margin: 15mm 10mm 15mm 20mm; }
  p, h2, h3 { orphans: 3; widows: 3; }
  h2, h3 { page-break-after: avoid; }
}

h1:not(:first-child) {
  margin-top: 100px;
}

.note {
  background-color: rgba(255,255,0,0.2);
  border: 1px solid #D8D800;
  padding: 10px;
}

img {
  border: 1px solid #CCC;
  padding: 5px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

.video-tutorials-list {
  -moz-columns: 2;
  -webkit-columns: 2;
  columns: 2;
  margin: 0;
  padding: 0;
  list-style: none;
}

.video-tutorials-list li {
  margin-bottom: 10px;
}

table {
  max-width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}
.table {
  width: 100%;
  margin-bottom: 18px;
}
.table th, .table td {
  padding: 8px;
  line-height: 18px;
  text-align: left;
  vertical-align: top;
  border-top: 1px solid #ddd;
}
.table th {
  font-weight: bold;
}
.table thead th {
  vertical-align: bottom;
}
.table thead:first-child tr th, .table thead:first-child tr td {
  border-top: 0;
}
.table tbody + tbody {
  border-top: 2px solid #ddd;
}
.table-condensed th, .table-condensed td {
  padding: 4px 5px;
}
.table-bordered {
  border: 1px solid #ddd;
  border-collapse: separate;
  *border-collapse: collapsed;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px;
}
.table-bordered th + th,
.table-bordered td + td,
.table-bordered th + td,
.table-bordered td + th {
  border-left: 1px solid #ddd;
}
.table-bordered thead:first-child tr:first-child th, .table-bordered tbody:first-child tr:first-child th, .table-bordered tbody:first-child tr:first-child td {
  border-top: 0;
}
.table-bordered thead:first-child tr:first-child th:first-child, .table-bordered tbody:first-child tr:first-child td:first-child {
  -webkit-border-radius: 4px 0 0 0;
  -moz-border-radius: 4px 0 0 0;
  border-radius: 4px 0 0 0;
}
.table-bordered thead:first-child tr:first-child th:last-child, .table-bordered tbody:first-child tr:first-child td:last-child {
  -webkit-border-radius: 0 4px 0 0;
  -moz-border-radius: 0 4px 0 0;
  border-radius: 0 4px 0 0;
}
.table-bordered thead:last-child tr:last-child th:first-child, .table-bordered tbody:last-child tr:last-child td:first-child {
  -webkit-border-radius: 0 0 0 4px;
  -moz-border-radius: 0 0 0 4px;
  border-radius: 0 0 0 4px;
}
.table-bordered thead:last-child tr:last-child th:last-child, .table-bordered tbody:last-child tr:last-child td:last-child {
  -webkit-border-radius: 0 0 4px 0;
  -moz-border-radius: 0 0 4px 0;
  border-radius: 0 0 4px 0;
}
.table-striped tbody tr:nth-child(odd) td, .table-striped tbody tr:nth-child(odd) th {
  background-color: #f9f9f9;
}
.table tbody tr:hover td, .table tbody tr:hover th {
  background-color: #f5f5f5;
}

.main-menu {
  position: fixed;
  top: 0px;
  left: 0px;
  width: 300px;
  height: 100%;
  background-color: #F4F4F4;
}

.main-menu a {
  color: #333;
}

.menu {
  margin: 50px 0 0 30px;
  padding: 0;
}

.menu li {
  padding: 5px;
  margin: 2px;
  list-style: none;
}

.menu li:hover .submenu {
  max-height: 300px;
}

.submenu {
  overflow: hidden;
  margin: 0;
  max-height: 0;
  transition: max-height 0.5s;
}