Urb-e.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.
Stray end tag “a”.
The element “label” must not appear as a descendant of the “a” element.
End tag “footer” seen, but there were open elements.
Unclosed element “div”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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