<nav>
  <!-- Gösta Hellner, Ostraka aus dem Kerameikos, Deutsches Archäologisches Institut Athen, 1963 -->
  <ul>
    <li class="p-intro"><a href="#intro">{{intro-page.title}}</a></li>
    {% for node in site.posts %}
    {% capture id %}{{ node.id | remove:'/' | downcase }}{% endcapture %}
    <li class="p-{{id}}"><a href="#{{id}}">{{node.title}}</a></li>
    {% endfor %}
    <li class="p-about"><a href="#about">{{about-page.title}}</a></li>
  </ul>
</nav>
