Errors:
Legacy doctype. Expected “<!DOCTYPE html>”.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
The “version” attribute on the “html” element is obsolete. You can safely omit it.
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
Bad value “//” for attribute “href” on element “link”: Invalid host: empty host.
Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.
Attribute “alt” not allowed on element “a” at this point.
Attribute “pubdate” not allowed on element “time” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “rel” not allowed on element “div” at this point.
Attribute “rel” not allowed on element “ul” at this point.
Attribute “rel” not allowed on element “li” at this point.
Attribute “a” not allowed on element “img” at this point.
Attribute “canal3” not allowed on element “img” at this point.
End tag “br”.
No “p” element in scope but a “p” end tag seen.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “banner” role is unnecessary for element “header”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “complementary” role is unnecessary for element “aside”.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
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