chromium/third_party/blink/web_tests/fast/forms/fieldset/fieldset-with-float.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<fieldset>
<div style="float:left;height:300px;width:300px;background-color:green"></div>
<div style="height:50px">Other content
</fieldset>