Errors:
Legacy doctype. Expected “<!DOCTYPE html>”.
The “profile” attribute on the “head” element is obsolete.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.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.
Attribute “alt” not allowed on element “a” at this point.
Duplicate ID “clip-path”.
Duplicate ID “Ebene_2”.
Duplicate ID “Ebene_1-2”.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
CSS: “z-index”: Parse Error.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
CSS: Parse Error.
Warnings:
The first occurrence of ID “clip-path” was here.
The first occurrence of ID “Ebene_2” was here.
The first occurrence of ID “Ebene_1-2” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
The “banner” role is unnecessary for element “header”.
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