Dominicos.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Bad value “https://www.w3.org/1999/xlink” for the attribute “xmlns:link” (only “http://www.w3.org/1999/xlink” permitted here).
The element “a” must not appear as a descendant of the “button” element.
Element “quote” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “javascript:()” for attribute “href” on element “a”: syntax error
Warnings:
The “navigation” role is unnecessary for element “nav”.
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.
The “button” role is unnecessary for element “button”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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