<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title></title>
<style type='text/css'>
p#paragraph-1 {
padding: 10px;
width: 200px;
border: 1px solid black;
margin: 10px;
background: gray;
}
p#paragraph-2 {
padding: 20px;
width: 180px;
border: 1px solid black;
margin: 10px;
background: lightgrey;
}
</style>
</head>
<body>
<p id='paragraph-1'>
This paragraph has a 200 pixel width and 10 pixels of padding.
</p>
<p id='paragraph-2'>
This paragraph has a 180-pixel width and 20 pixels of padding, and yet the
backgrounds of both paragraphs are lined up together.
</p>
</body>
</html>