#midtc{width: 500px;height: 300px;position: fixed;z-index: 9999;left: 50%;margin-left: -250px;top: 50%;margin-top: -150px;background: url(http://www.thea.cn/Public/Upload/Uploadfiles/image/20190308/20190308141452_40071.png);display: none;}
#midtc .a_con{width: 100%;height: 36px;position: absolute;left: 0px;bottom: 0px;}
#midtc .a_con a{width: 100%;height:100%;cursor: pointer;display:block}
#midtc .a_con a.a1{float: left;}
#midtc .close{width: 38px;height: 38px;margin-right: 0px;position: absolute;right: 0;top: 0;display: block;cursor: pointer;}