fieldset-invalid.html
<!DOCTYPE html>
<html class="reftest-wait">
<!-- Invalid fieldset -->
<style>
fieldset:invalid { display: none; }
</style>
<body onload="document.getElementById('input').setCustomValidity('foo'); document.documentElement.className='';">
<fieldset>
<input id="input">
</fieldset>
</body>
</html>
