Betzold.de W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The first occurrence of ID “merkzettel” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “navigation” role is unnecessary for element “nav”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “img” role is unnecessary for element “img”.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
Errors:
The element “label” must not appear as a descendant of the “a” element.
Element “ul” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “merkzettel”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “for” attribute of the “label” element must refer to a non-hidden form control.
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