072info.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 “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 “a”.
End tag “div” seen, but there were open elements.
End tag “article” seen, but there were open elements.
The “center” element is obsolete. Use CSS instead.
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “complementary” role is unnecessary for element “aside”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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