[runarberg]

Funny enough, I often mark up grid cards as an unordered list of articles:

    <ul>
      <li>
        <article>Card 1</article>
      </li>
      <li>
        <article>Card 2</article>
      </li>
    </ul>

Since grid cards are often complete stand-alone items with their own headings, footings and body content.