<main>
  <article class="playground">
    <div>
      <h2>&lt;h2&gt;</h2>
      <h3>&lt;h3&gt;</h3>
    </div>

    <div>
      <h2>&lt;h2&gt;</h2>
    </div>

    <div>
      <h3>&lt;h3&gt;</h3>
    </div>
  </article>
</main>