body{font-family:arial;font-size:13px;color:black}
.clear{clear:both}
#wrapper{width:95%;height:600px;border:solid black 5px}
#header{width:100%;height:50px;background:gray}
#content{width:100%;height:490px;}
#left{width:50%;height:500px;background:pink;float:left}
#right{width:50%;height:500px;background:brown;float:right}
#top{width:100%;height:250px;background:green}
#bottom{width:100%;height:250px;background:yellow}
#footer{width:100%;height:50px;background:gray}