*{
	margin: 0;
	padding: 0;
}
.active{
	color: #999;
}
.book{
	height: 100%;
	display: flex;
}
.aside{
	width: 270px;
	height: auto;
	overflow: auto;
	border-right: 1px solid rgba(0,0,0,.07);
	margin-left: 20px;
	position: relative;
}
.aside::-webkit-scrollbar,
.book-body::-webkit-scrollbar{
  	display: none;
 	/* 隐藏滚动条，但依旧具备可以滚动的功能 */
}
.aside .btn_l{
	height: 40px;
	line-height: 40px;
	width: 270px;
	background-color: #fff !important;
	border-bottom: 1px solid rgba(0,0,0,.07);
	border-right: 1px solid rgba(0,0,0,.07);
	cursor: pointer;
	position: fixed;
}
.aside h1:first-of-type{
	margin-top: 40px;
}
.aside h1{
	height: 35px;
	font-size: 14px;
	font-weight: normal;
	color: #364149;
	line-height: 35px;
	cursor: pointer;
}
.aside ul{
	height: auto;
}
.aside ul li{
	height: 30px;
	line-height: 30px;
	font-size: 14px;
	list-style: none;
	margin-left: 20px;
	cursor: pointer;
}
.book-body{
	flex: 1;
	overflow: auto;
	position: relative;
}
.book-body .right_head{
	position: fixed;
	width: 100%;
	height: 40px;
	border-bottom: 1px solid rgba(0,0,0,.07);
	background: #fff;
}
.book-body .btn_r{
	width: 16px;
	height: 16px;
	cursor: pointer;
	padding: 20px 24px;
	background: url('https://ohc0dpsgs.qnssl.com/lego/images/button.png') no-repeat center center;
	background-size: 16px 16px;
}
.book-body .btn_r img{
	width: 100%;
	height: auto;
}
.book-body .normal{
	width: 90%;
	margin: 0 auto;
	margin-top: 40px;
}
.markdown-section {
	display: block;
	word-wrap: break-word;
	overflow: hidden;
	color: #333;
	line-height: 1.7;
	text-size-adjust: 100%;
	-ms-text-size-adjust: 100%;
	-webkit-text-size-adjust: 100%;
	-moz-text-size-adjust: 100%
}

.markdown-section * {
	box-sizing: border-box;
	-webkit-box-sizing: border-box;
	font-size: inherit
}

.markdown-section>:first-child {
	margin-top: 0!important
}

.markdown-section>:last-child {
	margin-bottom: 0!important
}

.markdown-section blockquote,.markdown-section code,.markdown-section figure,.markdown-section img,.markdown-section pre,.markdown-section table,.markdown-section tr {
	page-break-inside: avoid
}

.markdown-section h2,.markdown-section h3,.markdown-section h4,.markdown-section h5,.markdown-section p {
	orphans: 3;
	widows: 3
}

.markdown-section h1,.markdown-section h2,.markdown-section h3,.markdown-section h4,.markdown-section h5 {
	page-break-after: avoid
}

.markdown-section b,.markdown-section strong {
	font-weight: 700
}

.markdown-section em {
	font-style: italic
}

.markdown-section blockquote,.markdown-section dl,.markdown-section ol,.markdown-section p,.markdown-section table,.markdown-section ul {
	margin-top: 0;
	margin-bottom: .85em
}

.markdown-section a {
	color: #4183c4;
	text-decoration: none;
	background: 0 0
}

.markdown-section a:active,.markdown-section a:focus,.markdown-section a:hover {
	outline: 0;
	text-decoration: underline
}

.markdown-section img {
	border: 0;
	max-width: 100%
}

.markdown-section hr {
	height: 4px;
	padding: 0;
	margin: 1.7em 0;
	overflow: hidden;
	background-color: #e7e7e7;
	border: none
}

.markdown-section hr:after,.markdown-section hr:before {
	display: table;
	content: " "
}

.markdown-section hr:after {
	clear: both
}

.markdown-section h1,.markdown-section h2,.markdown-section h3,.markdown-section h4,.markdown-section h5,.markdown-section h6 {
	margin-top: 1.275em;
	margin-bottom: .85em;
	font-weight: 700
}

.markdown-section h1:first-child,
.markdown-section h2:first-child {
	padding-top: 0.8em;
}

.markdown-section h1 {
	font-size: 2em;
}

.markdown-section h2 {
	font-size: 1.75em
}

.markdown-section h3 {
	font-size: 1.5em
}

.markdown-section h4 {
	font-size: 1.25em
}

.markdown-section h5 {
	font-size: 1em
}

.markdown-section h6 {
	font-size: 1em;
	color: #777
}

.markdown-section code,.markdown-section pre {
	font-family: Consolas,"Liberation Mono",Menlo,Courier,monospace;
	direction: ltr;
	margin: 0;
	padding: 0;
	border: none;
	color: inherit
}

.markdown-section pre {
	overflow: auto;
	word-wrap: normal;
	margin: 0;
	padding: .85em 1em;
	margin-bottom: 1.275em;
	background: #f7f7f7
}

.markdown-section pre>code {
	display: inline;
	max-width: initial;
	padding: 0;
	margin: 0;
	overflow: initial;
	line-height: inherit;
	font-size: .85em;
	white-space: pre;
	background: 0 0
}

.markdown-section pre>code:after,.markdown-section pre>code:before {
	content: normal
}

.markdown-section code {
	padding: .2em;
	margin: 0;
	font-size: .85em;
	background-color: #f7f7f7
}

.markdown-section code:after,.markdown-section code:before {
	letter-spacing: -.2em;
	content: "\00a0"
}

.markdown-section table {
	display: table;
	width: 100%;
	border-collapse: collapse;
	border-spacing: 0;
	overflow: auto
}

.markdown-section table td,.markdown-section table th {
	padding: 6px 13px;
	border: 1px solid #ddd
}

.markdown-section table tr {
	background-color: #fff;
	border-top: 1px solid #ccc
}

.markdown-section table tr:nth-child(2n) {
	background-color: #f8f8f8
}

.markdown-section table th {
	font-weight: 700
}

.markdown-section ol,.markdown-section ul {
	padding: 0;
	margin: 0;
	margin-bottom: .85em;
	padding-left: 2em
}

.markdown-section ol ol,.markdown-section ol ul,.markdown-section ul ol,.markdown-section ul ul {
	margin-top: 0;
	margin-bottom: 0
}

.markdown-section ol ol {
	list-style-type: lower-roman
}

.markdown-section blockquote {
	margin: 0;
	margin-bottom: .85em;
	padding: 0 15px;
	color: #858585;
	border-left: 4px solid #e5e5e5
}

.markdown-section blockquote:first-child {
	margin-top: 0
}

.markdown-section blockquote:last-child {
	margin-bottom: 0
}

.markdown-section dl {
	padding: 0
}

.markdown-section dl dt {
	padding: 0;
	margin-top: .85em;
	font-style: italic;
	font-weight: 700
}

.markdown-section dl dd {
	padding: 0 .85em;
	margin-bottom: .85em
}

.markdown-section dd {
	margin-left: 0
}

.markdown-section .glossary-term {
	cursor: help;
	text-decoration: underline
}

.navigation {
	position: absolute;
	top: 50px;
	bottom: 0;
	margin: 0;
	max-width: 150px;
	min-width: 90px;
	display: flex;
	justify-content: center;
	align-content: center;
	flex-direction: column;
	font-size: 40px;
	color: #ccc;
	text-align: center;
	-webkit-transition: all 350ms ease;
	-moz-transition: all 350ms ease;
	-o-transition: all 350ms ease;
	transition: all 350ms ease
}

.navigation:hover {
	text-decoration: none;
	color: #444
}

.navigation.navigation-next {
	right: 0
}

.navigation.navigation-prev {
	left: 0
}

@media (max-width:1240px) {
	.navigation {
		position: static;
		top: auto;
		max-width: 50%;
		width: 50%;
		display: inline-block;
		float: left
	}

	.navigation.navigation-unique {
		max-width: 100%;
		width: 100%
	}
}



* {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	-webkit-overflow-scrolling: touch;
	-webkit-tap-highlight-color: transparent;
	-webkit-text-size-adjust: none;
	-webkit-touch-callout: none;
	-webkit-font-smoothing: antialiased
}

a {
	text-decoration: none
}

body,html {
	height: 100%
}

html {
	font-size: 62.5%
}

body {
	text-rendering: optimizeLegibility;
	font-smoothing: antialiased;
	font-family: "Helvetica Neue","Hiragino Sans GB","Microsoft YaHei","\9ED1\4F53",Arial,sans-serif;
	font-size: 14px;
	letter-spacing: .2px;
	text-size-adjust: 100%;
	-ms-text-size-adjust: 100%;
	-webkit-text-size-adjust: 100%
}


.markdown-section h1,.markdown-section h2,.markdown-section h3,.markdown-section h4,.markdown-section h5,.markdown-section h6 {
	margin-top: 2em;
	margin-bottom: .5em;
	font-weight: 400
}

.markdown-section table tr:nth-child(2n) {
	background-color: #fff
}

.markdown-section p {
	line-height: 2
}

.markdown-section table {
	margin-top: 1em;
	margin-bottom: 3em;
	border-bottom: 1px solid #e7e7eb
}

.markdown-section table td,.markdown-section table th {
	border: none
}

.markdown-section table tr:first-child {
	border: none
}

.markdown-section thead tr:first-child {
	background-color: #f6f8f9
}

.markdown-section table tr {
	border-top: 1px solid #e7e7eb
}

.markdown-section table th {
	font-weight: 400;
	color: #8d8d8d;
	text-align: left;
	height: 40px;
	padding: 6px 20px
}

.markdown-section table td {
	height: 60px;
	padding: 12px 20px
}

.markdown-section img {
	max-width: 75%;
	max-height: 500px
}

section>p {
	text-indent: 20px
}
@media screen and (max-width: 736px) {
    .aside{display: none;;}
  }


.icon_lists{
  width: 100% !important;

}

.icon_lists li{
  float:left;
  width: 100px;
  height:180px;
  text-align: center;
  list-style: none !important;
}
.icon_lists .icon{
  font-size: 42px;
  line-height: 100px;
  margin: 10px 0;
  color:#333;
  -webkit-transition: font-size 0.25s ease-out 0s;
  -moz-transition: font-size 0.25s ease-out 0s;
  transition: font-size 0.25s ease-out 0s;

}
.icon_lists .icon:hover {
  font-size: 100px;
}

@media screen and (max-width: 414px) {
	.book {
		display: block;
		height: 100%;
	}
	.aside, .book-body {
		width: 100%;
		height: 100%;
		overflow-y: scroll;
		position: absolute;
		top: 0;
	}
	.aside {
		background: #fff;
		margin-left: 0;
		margin-top: 0;
		padding-left: 20px;
		z-index: 999;
		top: 40px;
	}
	.aside h1:first-of-type {
		margin-top: 5px;
	}
	.aside .btn_l {
		width: 100%;
		position: relative;
	}
	.book-body {
		position: relative;
		height: 100%;
	}
	.book-body .right_head {
		z-index: 1000;
	}
}