Ciao, se in fase di validazione mi viene visualizzato questo messaggio

No Character Encoding Found! Falling back to UTF-8. I was not able to extract a character encoding labeling from any of the valid sources for such information. Without encoding information it is impossible to reliably validate the document. I'm falling back to the "UTF-8" encoding and will attempt to perform the validation, but this is likely to fail for all non-trivial documents.

Read the FAQ entry on character encoding for more details and pointers on how to fix this problem with your document.

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.

Note: The Validator XML support has some limitations.


il documento ha un dichiarazione di questo tipo

codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
Vuol dire che devo cambiare qualche cosa?

Grazie