# File lib/rouge/lexers/css.rb, line 178
      def self.vendor_prefixes
        @vendor_prefixes ||= Set.new %w(
          -ah- -atsc- -hp- -khtml- -moz- -ms- -o- -rim- -ro- -tc- -wap-
          -webkit- -xv- mso- prince-
        )
      end