<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <title>Test for http://bugs.webkit.org/show_bug.cgi?id=13680</title>
</head>
<body>
    <div style="width: 50px; text-align: center;">
        <span><div style="width: 30px; height:40px; background-color: silver; margin: auto"></div>
            x
        </span>
    </div>
</body>
</html>