1 files changed, 3 insertions, 2 deletions

diff --git a/lisp/textmodes/css-mode.el b/lisp/textmodes/css-mode.el
index 9e36a881a3e..c81c3f62e16 100644
--- a/lisp/textmodes/css-mode.el
+++ b/lisp/textmodes/css-mode.el
@@ -1,6 +1,6 @@
 ;;; css-mode.el --- Major mode to edit CSS files  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2006-2016 Free Software Foundation, Inc.
+;; Copyright (C) 2006-2017 Free Software Foundation, Inc.
 
 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
 ;; Maintainer: Simen Heggestøyl <simenheg@gmail.com>
@@ -27,7 +27,6 @@
 
 ;;; Todo:
 
-;; - electric ; and }
 ;; - filling code with auto-fill-mode
 ;; - fix font-lock errors with multi-line selectors
 
@@ -667,6 +666,8 @@ cannot be completed sensibly: `custom-ident',
     ;; Variables.
     (,(concat "--" css-ident-re) (0 font-lock-variable-name-face))
     ;; Selectors.
+    ;; Allow plain ":root" as a selector.
+    ("^[ \t]*\\(:root\\)\\(?:[\n \t]*\\)*{" (1 'css-selector keep))
     ;; FIXME: attribute selectors don't work well because they may contain
     ;; strings which have already been highlighted as f-l-string-face and
     ;; thus prevent this highlighting from being applied (actually now that