.box{position:relative}.ceshibox{position:absolute;top:20px;left:20px;z-index:1005;overflow:hidden;width:310px;border-radius:3px;background:#fff;box-shadow:2px 5px 5px rgba(0,0,0,.3);transition:.3s}header{position:relative;z-index:1;padding:10px 0;box-shadow:0 1px 1px rgba(0,0,0,.3)}.header-logo{float:left;margin-top:5px;margin-left:18px;width:125px;height:24px;background:url(../img/indexImg.da7d06be.png) -669px 0 no-repeat}#menu_display{float:right;margin-top:8px;margin-right:10px;width:19px;height:15px;border:none;background:url(../img/indexImg.da7d06be.png) -324px 0 no-repeat;cursor:pointer}.ceshicenter{height:500px}