layout/base/crashtests/1506314.html


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<style>
.x {
  column-span: all;
  columns: 0;
}
</style>
<script>
function go() {
  a.appendChild(b);
}
</script>
<body onload=go()>
<summary id="a" class="x">
<h5 class="x">
<a id="b">