Update runtime files.
diff --git a/runtime/ftplugin/css.vim b/runtime/ftplugin/css.vim
index 33fcee3..ece2def 100644
--- a/runtime/ftplugin/css.vim
+++ b/runtime/ftplugin/css.vim
@@ -2,7 +2,7 @@
" Language: CSS
" Maintainer: Doug Kearns <dougkearns@gmail.com>
" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
-" Latest Revision: 2008-07-09
+" Last Change: 2020 Dec 21
if exists("b:did_ftplugin")
finish
@@ -12,11 +12,12 @@
let s:cpo_save = &cpo
set cpo&vim
-let b:undo_ftplugin = "setl com< cms< inc< fo< ofu<"
+let b:undo_ftplugin = "setl com< cms< inc< fo< ofu< isk<"
setlocal comments=s1:/*,mb:*,ex:*/ commentstring&
setlocal formatoptions-=t formatoptions+=croql
setlocal omnifunc=csscomplete#CompleteCSS
+setlocal iskeyword+=-
let &l:include = '^\s*@import\s\+\%(url(\)\='