header {
	position: relative;
	padding: 0 20px;
	font-size: 30px;
	line-height: 60px;
	color: #fff;
	background: #2fc9da;
}

.link-github {
	position: absolute;
	top: 15px;
	right: 20px;
	padding: 5px 15px;
	font-size: 14px;
	line-height: 20px;
	color: #333;
	background: #fff;
	border-radius: 15px;
}
.link-github svg {
	margin-right: 5px;
	vertical-align: middle;
}
.link-github:hover,
.link-github:active {
	background: #eee;
}

#item-container {
	position: fixed;
	top: 60px;
	left: 0;
	right: 0;
	width: 100%;
	bottom: 0;
	overflow: auto;
	background: #f7f7f7;
}
#item-container li {
	padding: 10px 20px;
	border-bottom: 1px solid #ccc;
}
#item-container li:last-child {
	border-bottom: none;
}


.index-sidebar-container {
	position: fixed;
	top: 70px;
	right: 0;
	overflow: visible;
	-webkit-user-select: none;
	user-select: none;
	cursor: default;
	z-index: 999;
}
.index-sidebar-container ul {
	padding: 0 5px;
	list-style: none;
	font-size: 13px;
	line-height: 1.5;
	color: #999;
}
.index-sidebar-container li {
	text-align: center;
}
.index-sidebar-container .current-char {
	display: none;
	position: fixed;
	top: 0;
	left: 0;
	margin-left: -80px;
	margin-top: -20px;
	height: 40px;
	width: 40px;
	line-height: 40px;
	font-size: 32px;
	text-align: center;
	color: #999;
}