<html><head>
<style>
*{
margin:0;
padding:0}
div{
width:120px;
height:80px;
position:absolute;
top:10px}
#red{
left:25%;
margin-left:-90px;
background:red}
#green{
left:50%;
margin-left:-60px;
background:green}
#blue{
left:75%;
margin-left:-30px;
background:blue}
</style>
</head><body>
<div id="red"></div>
<div id="green"></div>
<div id="blue"></div>
</body></html>