Unwatch.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.
Element “align="center"” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
A slash was not immediately followed by “>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “img”.
Start tag “a” seen but an element of the same type was already open.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “a”.
Unclosed element “align="center"”.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Element name “align="center"” cannot be represented as XML 1.0.
Attribute “align-"center"” is not serializable as XML 1.0.
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