{% macro fi(pic, link='', alt='', credit='') %}
<div class="featured-image">
  <figure>
    <a href="{{ link }}" alt="{{ alt }}"><img src="{{ pic }}" /></a>
    {% if credit is defined %}
    <figcaption>Bild: {{ credit }}</figcaption>
    {% endif %}
  </figure>
</div>
{% endmacro %}