users name doesn't overflow in user menu

public/stylesheets/sass/application.sass

@@ -108,6 +108,7 @@ header
     :color #333
   :padding 0
     :top 5px
+  :color #CCC
 
   a
     :color #CCC
@@ -125,8 +126,10 @@ header
     :color #fff
 
   ul#user_menu
-    a
-      :text-shadow 0 1px 0 #000
+    :overflow hidden
+    :white-space nowrap
+    :text-overflow ellipsis
+    :text-shadow 0 1px 0 #000
 
     :width 100px