Stau.info W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
Errors:
Bad value “index,follow” for attribute “rel” on element “a”: The string “index,follow” is not a registered keyword.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Heading cannot be a child of another heading.
Stray end tag “h3”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Germany DE