<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
        "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en-US">
<head>
        <title>reftest, bug 424236</title>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <meta http-equiv="Content-Style-Type" content="text/css">
        <style type="text/css">

        body { font-size: 16px; }
        * { -moz-outline-offset: -1px; outline-offset: -1px; }
        body > span { outline: 1px dotted black; }
        body > span > span { display: block; width: 10em; }
        body > span > span + span { display:inline; }
        body > span > span + span + span { display: block; width: 5em; }

        </style>
</head>
<body>

<span><span>text</span><span>Some words that must be wider than 10em</span><span>text</span></span>

</body>
</html>