Function "apropos-macrop" apparently no longer exists in Emacs 24.4.
Simply remove the code using it, since it was only needed for backwards
compatibility with Emacs 19 (the "kbd" macro appeared in Emacs 20.1).
https://bugs.gentoo.org/532358

--- css-mode-0.11-orig/css-mode.el
+++ css-mode-0.11/css-mode.el
@@ -166,16 +166,6 @@
   (define-key cssm-mode-map (read-kbd-macro "}") 'cssm-insert-right-brace-and-indent)
   (define-key cssm-mode-map (read-kbd-macro "M-TAB") 'cssm-complete-property))
 
-;;; Cross-version compatibility layer
-
-(when (not (or (apropos-macrop 'kbd)
-	     (fboundp 'kbd)))
-    (defmacro kbd (keys)
-      "Convert KEYS to the internal Emacs key representation.
-KEYS should be a string constant in the format used for
-saving keyboard macros (see `insert-kbd-macro')."
-      (read-kbd-macro keys)))
-
 ;;; Auto-indentation support
 
 ; internal