diff --git a/authens/templates/authens/base.html b/authens/templates/authens/base.html
index e79bd67..cf6c34a 100644
--- a/authens/templates/authens/base.html
+++ b/authens/templates/authens/base.html
@@ -9,6 +9,8 @@
 
     <link rel="stylesheet" href="{% static "authens/css/authens.css" %}" type="text/css">
 
+    {% block extra_css %}{% endblock %}
+
     <title>
       {% if request.site.name %}{{ request.site.name }}{% else %}AuthENS{% endif %} - login
     </title>