<div>
  <div  style="background-color: rgb(55,55,55);">
    <h2 style="margin: 5px;">Weitere Artikel zu diesem Thema</h2>
  </div>
<ul style="margin: 25px;">
  {% for post in site.posts reversed %}
    {% if post.tags contains {{include.topic}} %}
    <li>
      <a href="{{ site.baseurl }}{{ post.url }}">{{post.title}}</a>
    </li>
    {% endif %}
  {% endfor %}
</ul>
</div>