Alablaboratoria.pl W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End tag “div” seen, but there were open elements.
Unclosed element “h1”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
End tag “footer” seen, but there were open elements.
Unclosed element “div”.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL