Warning Byte-Order Mark found in UTF-8 File. The Unicode Byte-Order Mark (BOM) in UTF-8 encoded files is known to cause problems for some text editors and older browsers. You may want to consider avoiding its use until it is better supported. как решить проблему, ссылка на проверку validator.w3.org/check?uri=http%3A%2F%2Fjtl.by%2F