Ahha.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.
End tag “h4” seen, but there were open elements.
Unclosed element “a”.
No “a” element in scope but a “a” end tag seen.
The “center” element is obsolete. Use CSS instead.
Bad value “” for attribute “name” on element “input”: Must not be empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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