# File lib/css_parser/parser.rb, line 81
    def find_rule_sets(selectors, media_types = :all)
      rule_sets = []

      selectors.each do |selector|
        selector.gsub!(/\s+/, ' ')
        selector.strip!
        each_rule_set(media_types) do |rule_set, media_type|
          if !rule_sets.member?(rule_set) && rule_set.selectors.member?(selector)
            rule_sets << rule_set
          end
        end
      end

      rule_sets
    end