<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Vertical-align an element of unknown height</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<style type="text/css">
.outer {
position:relative;
display:table;
height: 200px;
width: 200px;
vertical-align: middle;
text-align: center;
background:#ccc;
float:left
}
.inner {
width:100%;
display:table-cell;
vertical-align:bottom;
position:relative;
}
p{
background:#aaa;
}
</style>
</head>
<body>
<div class="outer"><div class="inner"><p>this is a test. this is a test.
this is a test. this is a test. this is a test. </p></div></div>
</body>
</html>