body {
	margin: 0px;
	padding: 0px;
}
input[type="checkbox"],input[type="radio"] {
	width:20px;
	height:20px;
}
.container {
	line-height:1.8;
	word-wrap:break-word;
	word-break:break-all;
}
.form-control {
	display:inline;
	margin-top:2px;
}
.img-responsive {
	display:inline;
	margin-top:10px;
	margin-bottom:10px;
}
.h1, h1 {
    font-size: 32px;
}
.h2, h2 {
    font-size: 26px;
}
.h3, h3 {
    font-size: 20px;
}
.h4, h4 {
    font-size: 16px;
}
.dir-title {
	position: fixed;
	width: 100%;
	display: block;
	background: #f0f0f0;
	text-align: center;
	padding: 8px;
	font-weight: bold; 
}
.dir-title-bottom {
	height: 40px;
}
.btn-dir {
    border: 1px solid #ddd;
    text-align: center;
    position: fixed;
    background: #fff8;
    box-shadow: 0 2px 7px 0 rgba(0,0,0,.12);
    color: #000;
    font-size: 14px;
    width: 40px;
    height: 40px;
    line-height: 38px;
    border-radius: 50%;
    bottom: 20px;
    right: 20px;
}
.toc-item {
	display: block;
	overflow: hidden;
    white-space: nowrap;
	text-overflow: ellipsis;
}
.toc-item:hover {
	background: #f0f0f0;
}
.toc-item-1 {
	padding: 8px 18px;
	font-weight: bold;
	color: #333;
}
.toc-item-2 {
	padding: 8px 30px;
	color: #666;
}
.md-dir {
	position: -webkit-sticky;
	position: sticky;
    top: 0px;
    height: calc(100vh);
    overflow: auto;
}
.sm-dir {
	display: none;
	width: 100%;
}