body>
  <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
  <div class="fail">XXX<span>XX<br></span><span>XXXXX<br></span>XXXXX<br>XXXX<span>X<br></span><span>XXXXX</span></div>
  <div class="test">XXX
 XXXXXXXXX</div>
</body>
