# File lib/maruku/output/to_html.rb, line 231
  def add_css_to(head)
    if css_list = self.attributes[:css]
      css_list.split.each do |css|
        # <link type="text/css" rel="stylesheet" href="..." />
        link = xelem('link')
        link['type'] = 'text/css'
        link['rel'] = 'stylesheet'
        link['href'] = css
        head << link << xml_newline
      end
    end
  end