Nctrc.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “site-navigation”.
Element “dt” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End tag “br”.
End tag “div” seen, but there were open elements.
Unclosed element “a”.
No “a” element in scope but a “a” end tag seen.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Warnings:
The “banner” role is unnecessary for element “header”.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “site-navigation” was here.
The “navigation” role is unnecessary for element “nav”.
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