--- a/src/pyams_skin/configuration.py	Mon Mar 02 11:14:48 2015 +0100
+++ b/src/pyams_skin/configuration.py	Mon Mar 02 15:25:33 2015 +0100
@@ -60,7 +60,7 @@
     include_menus = True
     include_ribbon = True
     include_reload_button = True
-    body_css_class = False
+    body_css_class = 'fixed-header fixed-ribbon fixed-navigation'
 
     def __init__(self, context, request, view):
         self.context = context