#back2Top {
	width: 40px;
	line-height: 40px;
	padding:3px;
	overflow: hidden;
	z-index: 999;
	display: none;
	cursor: pointer;
	position: fixed;
	bottom: 10px;
	right: 0;
	background-color: #800000;
	color: #fff;
	text-align: center;
	font-size: 30px;
	text-decoration: none;
}
#back2Top:hover {
	background-color: #3399ff;
	color: #fff;
}