.mask{
	position: fixed;
	height: 100%;
	width: 100%;
	background: #333;
	top: 0px;
	left: 0px;
	opacity: 0.6;
	display: none;
}
.mask .loading{
	width: 150px;
	margin: -80px 0 0 -75px;
	height: 190px;
	position: absolute;
	top: 50%;
	left: 50%;
}