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Test Info:
- Manifest: layout/base/crashtests/crashtests.list
<script>
function go() {
a.appendChild(b);
}
</script>
<body onload=go()>
<fieldset id="a" style="height: 1vw; columns: 2px">
<legend></legend>
<legend>
<summary id="b">
<d>
A
<div>