Update runtime files.
diff --git a/runtime/syntax/css.vim b/runtime/syntax/css.vim
index c569213..c2c8357 100644
--- a/runtime/syntax/css.vim
+++ b/runtime/syntax/css.vim
@@ -2,7 +2,7 @@
" Language: Cascading Style Sheets
" Maintainer: Claudio Fleiner <claudio@fleiner.com>
" URL: http://www.fleiner.com/vim/syntax/css.vim
-" Last Change: 2010 Jul 28
+" Last Change: 2011 Dec 14
" CSS2 by Nikolai Weibull
" Full CSS2, HTML4 support by Yeti
@@ -182,7 +182,7 @@
syn region cssDefinition transparent matchgroup=cssBraces start='{' end='}' contains=css.*Attr,css.*Prop,cssComment,cssValue.*,cssColor,cssURL,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape
syn match cssBraceError "}"
-syn match cssPseudoClass ":\S*" contains=cssPseudoClassId,cssUnicodeEscape
+syn match cssPseudoClass ":[A-Za-z0-9_-]*" contains=cssPseudoClassId,cssUnicodeEscape
syn keyword cssPseudoClassId contained link visited active hover focus before after left right
syn match cssPseudoClassId contained "\<first\(-\(line\|letter\|child\)\)\=\>"
syn region cssPseudoClassLang matchgroup=cssPseudoClassId start=":lang(" end=")" oneline