#goTop {
	position: fixed;
	right: 15px;
	bottom: 15px;
	width: 40px;
	height: 40px;
	overflow: hidden;
	background-color: #888;
	display: none;
}

#goTop span {
	width: 100%;
	text-align: center;
	line-height: 40px;
	color: white;
}