<code-sample>

  <ul>
    <li>list item 1</li>
    <li>list item 2</li>
    <li>list item 3</li>
  </ul>
  <p>a paragraph</p>

</code-sample>

vs

<code-sample lang="cs" sample="

  <ul>
    <li>list item 1</li>
    <li>list item 2</li>
    <li>list item 3</li>
  </ul>
  <p>a paragraph</p>

"/>