chromium/third_party/blink/web_tests/external/wpt/css/CSS2/floats-clear/clear-with-top-margin-after-cleared-empty-block.html

<!DOCTYPE html>
<title>Clearance on empty block followed by block with large margin and 'clear'</title>
<link rel="author" title="Morten Stenshorne" href="[email protected]">
<link rel="help" href="https://www.w3.org/TR/CSS22/visuren.html#flow-control" title="9.5.2 Controlling flow next to floats: the 'clear' property">
<link rel="help" href="https://www.w3.org/TR/CSS22/box.html#collapsing-margins" title="8.3.1 Collapsing margins">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div style="position:relative; width:100px; border-top:1px solid white; top:-21px; z-index:-1; background:green;">
  <div style="float:left; width:100px; height:20px; background:white;"></div>
  <div style="clear:both;"></div>
  <div style="clear:both; margin-top:100px; height:20px; background:white;"></div>
</div>