.strap { height:365px;  margin:0 auto;}
.strap ul{ width:1300px; height:365px; margin:0 auto; border:0px solid #f00; }
.strap ul li { float:left; width:260px; height:365px; border:0px solid #fff;}
.strap ul li a { display:block; width:75%; height:365px; margin:0 auto; border:0px solid #ff0; }