html, body {
margin: 0;
}
#leftcol {
float: left;
width: 120px;
border: #000 1px solid;
}
#main {
margin: 0px;
}
#centercol {
border: #f00 1px solid;
margin: 0 210px 0 120px;
width: 480px;
}
#rightcol {
float: right;
width: 300px;
border: #000 1px solid;
}