Reed.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Element “meta” is missing one or more of the following attributes: “content”, “property”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Element “form” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “title” not allowed on element “svg” at this point.
Attribute “aria-labelled-by” not allowed on element “div” at this point.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Bad value “https://www.w3.org/2000/svg” for the attribute “xmlns” (only “http://www.w3.org/2000/svg” permitted here).
Bad value “https://www.w3.org/1999/xlink” for the attribute “xmlns:link” (only “http://www.w3.org/1999/xlink” permitted here).
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “navigation” role is unnecessary for element “nav”.
The “banner” role is unnecessary for element “header”.
Attribute “xmlns” is not serializable as XML 1.0.
Attribute “xmlns:xlink” with a value other than “http://www.w3.org/1999/xlink” is not serializable as XML 1.0 without changing document semantics.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
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