<!DOCTYPE html>
<title>CSS Containment: contain:style and &lt;ol&gt; ordinals (pseudo, ref)</title>
<ol>
  <li value="10">10A10</li>
  <li value="11">11B11</li>
  <div>
    <li value="1">1X1</li>
    <li value="2">2Y2</li>
  </div>
  <li value="12">12C12</li>
  <li value="13">13D13</li>
</ol>
