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<p style="visibility: collapse;"><button><input><script>document.getElementsByTagName('input')[0].offsetTop;</script><input id="test"></input></button></p>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
document.body.offsetTop;
document.getElementById('test').parentNode.removeChild(document.getElementById('test'));
document.body.offsetTop;
</script>
<p>Test for bug <a href="https://bugs.webkit.org/show_bug.cgi?id=63776">63776</a>: Partial layout when a flex-box has visibility: collapse</p>
<p>This test PASSES if it does not CRASH.</p>
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