Mehrere Spalten mit gleicher Höhe mittels display: table und table-cell

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Layout with table / table-cell</title>
<style type="text/css">
#wrapper {
display: table;
}

aside, section {
display: table-cell;
}

aside {
width: 25%;
}

section {
width: 75%;
}
</style>
</head>
<body>
<div id="wrapper">
<section>