body{font-family:arial;font-size:13px;color:black}
.clear{clear:both;}
.wrapper{width:70%;height:800px;}
.header{width:100%;height:50px;background:gray}
.content{width:100%;height:700px;}
.content1{width:100%;height:250px;}
.left{width:40%;height:250px;float:left}
.up{width:100%;height:125px;background:green;float:left}
.down{width:100%;height:125px;background:black;float:left}
.right{width:60%;height:250px;background:cyan;float:right}
.content2{width:100%;height:200px;background:pink}
.part1{width:50%;height:200px;background:silver}
.sub1{width:100%;height:100px;background:yellow;float:right}
.sub2{width:100%;height:100px;background:brown;float:left}
.part2{width:50%;height:200px;background:gray}
.content3{width:100%;height:250px;background:purple}
.footer{width:100%;height:50px;background:cyan}