Make blog cards bigger

templates/frontpage/blocks/blog.html

@@ -4,7 +4,7 @@
     <h2 class="title is-2">{{ title | default(value="Aus dem Teckids-Blog") }}</h2>
     <div class="columns is-multiline is-same-height">
       {% for post in blog_section.pages | slice(end=4) %}
-        <div class="column is-one-quarter">
+        <div class="column is-one-third">
           {% include "blog/card.html" %}
         </div>
       {% endfor %}