centered default image

src/app/views/event-meta.twig

@@ -9,6 +9,7 @@
     {% endif %}
   </div>
 {% else %}
+  <div class="img">
     {% if event.url %}
       <a target="_blank" href="{{ event.url }}">
         <img src="{{ level2.logo }}" />
@@ -16,6 +17,7 @@
     {% else %}
       <img src="{{ level2.logo }}" />
     {% endif %}
+  </div>
 {% endif %}
 <h4>{{ event.date }}</h4>
 {% if event.location is defined %}