<section class="flex">
  <h2>Flex</h2>
  <ul>
    <li><a href="#0">Home</a></li>
    ...
    <li><a href="#0">Pricing</a></li>
  </ul>
</section>

<section class="grid">
  <h2>Grid</h2>
  <ul>
    <li><a href="#0">Home</a></li>
    ...
    <li><a href="#0">Pricing</a></li>
  </ul>
</section>