.list{position: relative;width: 100%;overflow: hidden;padding-bottom: 18px;}
.item-info{margin-bottom: 1%;}
.item-1{width: 26%; float: left;margin-right: 1%;}
.item-info > div{border:1px solid #fff;position: relative;overflow: hidden;}
.item-img{width: 100%;height: 0;overflow: hidden;padding-bottom:55.901%;display: block; }
.item-2{width: 53%;position: absolute;left:27%;top:0;}
.item-2 .item-img{padding-bottom: 56.621%;}
.item-marginR{margin-right: 72%;}
.item-4{width: 18.7%;float: left;}
.item-4 .item-img{padding-bottom: 80.718%;}
.item-3{width: 18.7%;position: absolute;right: 0.4%;top:0;}
.item-3 .item-img{padding-bottom: 166.817%;}