html, body {
margin: 0px;
padding: 0px;
border: 0px;
}
body h1 {
margin-top: 25px;
margin-left: 235px;
}
h2, h3 {
text-align: center; 
}
#main {
margin: 75px;
padding: 10px;
width: 600px;
border: 1px solid #000;
position: absolute;
z-index: 0;
top: 0px;
left: 0px;
background: #396;
}
#main #spacer {
height: 140px;
width: 140px;
clear: left;
float: left;
}
#nav {
position: absolute;
border: 1px solid #000;
z-index: 1000;
width: 200px;
left: 0px;
top: 0px;
padding: 5px 0 10px 10px;
background: #fff;
}