<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#static
{
width:100px;
height:100px;
background-color:green;
}

#relative2
{
width:100px;
height:100px;
background-color:yellow;
position:relative;
top:0px;
left:100px;
}
#relative3
{
width:100px;
height:100px;
background-color:red;
position:relative;
top:0px;
left:200px;
}
</style>
</head>

<body>
<div id="static">
1. static
</div>
<div id="relative2">
2. relative
</div>
<div id="relative3">
3. relative
</div>
</body>
</html>