Add headline class to headline element

web/app/templates/nopaque.html.j2

@@ -231,7 +231,7 @@
         <div class="container">
         {% endif %}
         <div class="row">
-          <div class="col s12">
+          <div class="col s12 headline">
             <h2>{{ headline }}</h2>
           </div>
           {{ insert_content() }}