/* ----- Menu Follow -----*/
#bt_toTop {
	position: fixed;
	background-image: url(../image/concept/top.png);
	background-repeat: no-repeat;
	background-position: center top;
	width: 100px;
	height: 77px;
	right: 10px;
	bottom: -100px;
	opacity: 0;
	z-index: 4;
}