Infosurv.com 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.
Element “a” is missing one or more of the following attributes: “role”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “p” seen, but there were open elements.
Unclosed element “span”.
Stray end tag “span”.
Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The “aria-controls” attribute must point to an element in the same document.
Warnings:
The “banner” role is unnecessary for element “header”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “navigation” role is unnecessary for element “nav”.
The “contentinfo” role is unnecessary for element “footer”.
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