# File lib/css_parser/rule_set.rb, line 67
    def add_declaration!(property, value)
      if value.nil? or value.empty?
        @declarations.delete(property)
        return
      end

      value.gsub!(/;\Z/, '')
      is_important = !value.gsub!(CssParser::IMPORTANT_IN_PROPERTY_RX, '').nil?
      property = property.downcase
      property.strip!
      #puts "SAVING #{property}  #{value} #{is_important.inspect}"
      @declarations[property] = {
        :value => value, :is_important => is_important, :order => @order += 1
      }
    end