#container{
width: 800px;}
#header {background-color:red;
color:white;
text-align:center;}
#content {padding: 10px:}
#nav {width:180px;
float: left;}
#main {width:600px;
float:right;}
#footer {clear:both;
padding:10px;
background-color: grey;
color:white;
text-align: right;
}