.mask{
	width: 100%;
	height: 100%;
	background-color: rgba(242,242,242, 0.5);
	position: fixed;
	left: 0;
	top: 0;
	text-align: center;
	display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
  	align-items: center;
    -webkit-justify-content: center;
  	justify-content: center;
}
.mask>div{
	border: 1px solid #D0D0D0;
    font-size: 12px;
    padding: 5px 15px;
    height: 87px;
    line-height: 9;
    border-radius: 5px;
    max-width: 150px;
    color: #FFF;
    background: url(../img/loading.gif) no-repeat center 15px;
    background-size: 30px 30px;
    padding-left: 25px;
    background-color: #454344;
    word-wrap: break-word;
    margin: 0 auto;
}

.scroll-off{
	position:fixed;
	overflow-y:hidden
}