#pageTop{
	display: none;
	position: fixed;
	z-index: 9999;
	bottom: -80px;
	right: 10px;
	width: 80px;
	cursor: pointer;
	text-decoration: none;
	transition: .5s;
}
#pageTop.veiw {
	display: block;
}
#pageTop span {
	display: table-cell;
	width: 80px;
	height: 50px;
	position: relative;
	background: rgba(0,0,0,.7);
	color: #fff;
	text-align: center;
	vertical-align:middle;
}
#pageTop span:before {
    position: absolute;
    top: -24px;
    left: 50%;
    width: 0;
    height: 0;
    content: '';
    border-top: 0;
	border: 12px solid transparent;
	border-bottom: 12px solid rgba(0,0,0,.7);
    margin: 0 0 0 -10px;
}