<!DOCTYPE html>
<html>
<body>
<div id="sandbox">
  <div id="host">
    <div id="nested-host">
      text1
      <div>
        text2
        <div>
          text3
          <div style="color: green">green</div>
          <div>normal</div>
        </div>
      </div>
    </div>
  </div>
</div>
</body>
</html>