fix style

src/server/views/layout-kibela/page_list.html

@@ -33,7 +33,7 @@
 </div>
 
   <div class="row page-list bg-white round-corner grw-pt-10px mb-5 {% if page.isPortal() %}mt-5{% endif %}">
-    <div class="col-xs-12">
+    <div class="col">
       {% include '../widget/page_list_and_timeline_kibela.html' %}
     </div>
   </div>