1 HATA
Unable to Determine Parse Mode!
The validator can process documents either as XML (for document types such as XHTML, SVG, etc.) or SGML (for HTML 4.01 and prior versions). For this document, the information available was not sufficient to determine the parsing mode unambiguously, because:
the MIME Media Type (text/html) can be used for XML or SGML document types
No known Document Type could be detected
No XML declaration (e.g ) could be found at the beginning of the document.
No XML namespace (e.g ) could be found at the root of the document.
As a default, the validator is falling back to SGML mode.
2.HATA
No DOCTYPE found, and unknown root element. Aborting validation.
The DOCTYPE Declaration was not recognized or is missing. This probably means that the Formal Public Identifier contains a spelling error, or that the Declaration is not using correct syntax, or that your document is not using a DOCTYPE Declaration.
Without a DOCTYPE Declaration it is not possible to check the validity of your document. Since the document does not start with the root element, automatic fallback to an HTML document type was not performed, and most of the validation process was aborted: only basic markup syntax was checked.
Learn how to add a doctype to your document from our FAQ, or use the validator's Document Type option to validate your document against a specific Document Type.
3.HATA
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.
Şimdilik bunları yaparsam sanırım yeterli olur yavaş yavaş baya hata algıladı.Yardımcı olacak olan arkadaşlara şimdiden teşekkürler.