<!-- This test is intentionally in quirks mode -->
<style>
  div { color: red; }
  .TEST1 div { color: green; }
  #TEST2 div { color: green; }
</style>
<div class="test1">
  <div>This text should be green</div>
</div>
<div id="test2">
  <div>This text should be green</div>
</div>