#wrapper{margin:50px auto;width:600px;height:600px;background:#5f5f5f;border:2px solid black;}
header{width:100%;height:80px;background:cyan;}
#content{width:100%;height:440px;}


/** layout 1 **/
#layout #content-left{width:20%;height:440px;background:yellow;float:right;}
footer{width:100%;height:80px;background:blue;}