FIX: fixed css (space between page header and page body)

dav_events/templates/dav_events/event_detail.html

@@ -110,7 +110,7 @@
 {% endblock modals %}
 
 {% block page-container-fluid %}
-<div class="action-tabs">
+<div class="action-tabs top-most">
     <div class="pull-right">
         {% if has_permission_submit %}
         <a id="btn-submit" class="btn {% if not is_submitted %}btn-success{% else %}btn-default disabled{% endif %}"