code: func (inliner *Inliner) parseStylesheets() error {
  	var result error
  
  	inliner.doc.Find("style").EachWithBreak(func(i int, s *goquery.Selection) bool {
  		stylesheet, err := parser.Parse(s.Text())
  		if err != nil {
  			result = err
  			return false
  		}
  
  		inliner.stylesheets = append(inliner.stylesheets, stylesheet)
  
  		// removes parsed stylesheet
  		s.Remove()
  
  		return true
  	})
  
  	return result
  }
docs: // Parses and removes stylesheets from HTML document