*{margin:0px;padding:0px}
body{font-family:arial;font-size:13px;}
.clear{clear:both}
#wrapper{width:80%;height:600px;border:5px solid black;margin:10px auto;}
#header{width:100%;height:48px;background:gray;border:2px solid black}
#content{width:100%;height:500px;}
#left{width:29%;height:480px;background:orange ;margin:5px;border:1px solid black;padding:5px;overflow-y:auto;margin:10px auto;}
#footer{width:100%;height:48px;background:gray;border:2px solid black}