[Invalid] Markup Validation of http www.jacket01.c

cgparis2010

Markup Validation Service ,[link widoczny dla zalogowanych]
Check the markup (HTML,[link widoczny dla zalogowanych], XHTML,[link widoczny dla zalogowanych], …) of Web documents

The element named above was found in a context where it is not allowed. This could mean that you have incorrectly nested elements -- such as a "style" element in the "body" section instead of inside "head" -- or two elements that overlap (which is not allowed).

One common cause for this error is the use of XHTML syntax in HTML documents. Due to HTML's rules of implicitly closed elements,[link widoczny dla zalogowanych], this error can create cascading effects. For instance,[link widoczny dla zalogowanych], using XHTML's "self-closing" tags for "meta" and "link" in the "head" section of a HTML document may cause the parser to infer the end of the "head" section and the beginning of the "body" section (where "link" and "meta" are not allowed; hence the reported error).