div#to-top
{
    width:100px;
	background:#32b3bf;
	position:fixed;
	right:10px;
	display:none;
	padding:10px;
	color:White;
	text-align:center;
	vertical-align:middle;
	font-weight:bold;
	letter-spacing:4px;
	cursor:pointer;
	z-index:100;
	 
	/* CSS3 陰影*/
	-webkit-box-shadow: 0px 8px 15px #333;
	-moz-box-shadow: 0px 8px 15px #333;
	box-shadow: 0px 8px 15px #333;
}

div#to-top:hover
{
    background-color:#3378df;
}