code: def render(self, text, add_header=False):
          
  
          html = mark_text(text, self.aesthetics, self.rules)
          html = html.replace('\n', '<br/>')
          if add_header:
              html = '\n'.join([HEADER, self.css, MIDDLE, html, FOOTER])
          #print('\n'.join((HEADER, self.css, MIDDLE, html, FOOTER)))
          return html
docs: Render the HTML.
  
          Parameters
          ----------
          add_header: boolean (default: False)
              If True, add HTML5 header and footer.
  
          Returns
          -------
          str
              The rendered HTML.