#guide-nav div {	float: left;	padding: 0 15px 15px 0;	width: 190px;}#guide-nav div ul li {	padding: 2px 0 2px 0;}.back-to-top {	position: fixed;	bottom: 0px;	right: 380px;	background-color: #eee;	border: 1px solid #ccc;	text-align: center;	padding: 10px;	font-size: 11px;}.static-hr {	background-color: #ccc;	height: 1px;	border: 0;	}.img-center {margin: 0 auto; display: block;}