Nobilis.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “viewbow” not allowed on element “svg” at this point.
Element “figcaption” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Attribute “xmlns:a” not allowed here.
Element “script” must not have attribute “defer” unless attribute “src” is also specified.
Stray end tag “footer”.
Stray end tag “main”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute with the local name “xmlns:a” is not serializable as XML 1.0.
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