<!DOCTYPE html>
<style>
header {
    -webkit-border-radius: 4in;
    overflow: hidden;
}
</style>
<header>
    <fieldset></fieldset>
    <h1></h1>
</header>
<p>This test PASSES if it does not CRASH.</p>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>