This example only works on Mozilla/Navigator 6, as this is the only browser that currently supports CSS 2 positioning correctly.
The markup in this example is as follows:
<html>
<head>
<title> Example of Absolute Positioning to center-align absolutely
positioned content </title>
<style>
.both {position: absolute;
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;
width: 150px;
height: 100px;
background-color: cyan;
border: 1px solid black; }
.one {position: absolute;
top: 0;
left:0;
height: 50px;
width: 50px;
background-color: orange; }
.two {position: absolute;
top: 0;
left:100px;
height: 50px;
width: 50px;
background-color: blue; }
</style>
<body>
<div align="center" class="both">
<div class="one">first</div>
<div class="two">second</div>
</div>
</body>
</html>