body{background:#777777}



.mainbk{width:371px;height:474px;background:url(../images/mainbk.svg);position: fixed;left:50%;margin-left:-185.5px;top:50%;margin-top:-237px}
.mainbk .ilogo{position: absolute;left:55px;top:55px;}
.mainbk .dhc{position: absolute;left:65px;top:130px;}
.mainbk .cdli{margin-bottom:20px;}
.mainbk .cdli .z{font-size:16px;}
.mainbk .cdli .e{font-size:12px;color:#888}
.mainbk .wei{position: absolute;left:60px;top:320px;}
.mainbk .wei .ewm{position: absolute;left:45px;top:-25px;display: none}
.mainbk .wei .ewm img{width:100px;height:100px}
.mainbk .wei:hover .ewm{display: block}