ref-filled-green-100px-square.xht">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="display: flow-root; width: 100px; background: red; position: relative;">
  <div>
    <div style="float: right; width: 50px; height: 30px; background: green;"></div>
    <div>
      <div style="overflow: hidden; width: 100px; height: 70px; margin-top: 100px; background: green;"></div>
    </div>
    <div style="position: absolute; width: 50px; height: 30px; top: 0; left: 0; backgr