navigation.html

<nav>
  <a href="https://leaps-initiative.eu/"><img src='{{ "/assets/images/leaps-logo.png" | relative_url }}' alt="LEAPS logo"></a>
  <ul>
    {% for item in site.data.navigation %}
      <li>
        <a href="{{ item.link | relative_url }}" {% if page.url == item.link %} class="focus" {% endif %}>
          {{ item.name }}
        </a>
      </li>
    {% endfor %}
  </ul>
</nav>