Checkissuing.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.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
End tag “p” implied, but there were open elements.
Unclosed element “span”.
Text not allowed in element “iframe” in this context.
Stray end tag “span”.
No “p” element in scope but a “p” end tag seen.
Element “p” not allowed as child of element “q” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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