a.back-to-top {
	display: none;
	width: 60px;
	height: 60px;
	text-indent: -9999px;
	position: fixed;
	right: 2%;
	bottom: 2%;
	background: #b76201 url("/image/up-arrow.png") no-repeat center 43%;
	-webkit-border-radius: 30px;
	-moz-border-radius: 30px;
	border-radius: 30px;
    border-color:#b76201;
    border-style:solid;
    opacity:0.5;
}
a.back-to-top.showed {
    display:inline;
    z-index:9999999;
    transform: translateZ(0px);
}
a.back-to-top:hover {
	background-color: #F58C3A;
    border-color:#F58C3A;
    opacity:1;
	cursor: pointer;
}