docs: public static String removeHtmlAttr(String content, String... attrs) {
  		String regex = null;
  		for (String attr : attrs) {
  			regex = StrUtil.format("(?i)\\s*{}=([\"']).*?\\1", attr);
  			content = content.replaceAll(regex, StrUtil.EMPTY);
  		}
  		return content;
  	}