<html>
<head>
<style type="text/css">
body, pre {
font-family: monospace, monospace;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<pre> test</pre>
<div> test</div>
<div><span style="display: inline-block; width: 4em"></span>test</div>
<div style="padding-left: 4em">test</div>
</body>
</html>