html, body {margin:0; padding:0; border:0;}
body {background-color:#666; background-image: url(yellowbg.gif);}
#wrapper {margin:0 auto; padding:0; width:75%; background-color:#ffd; border-left:1px solid #000; border-right:1px solid #000;}
#header {margin:0 10px; height:120px;}
#nav {height:100%; background-color:#ccc; border:1px solid #000; overflow:hidden;}
#content {margin:10px; padding:5px 10px; background-color:#ffd;overflow:hidden;}