Nabu.gov.ua W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Legacy doctype. Expected “<!DOCTYPE html>”.
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
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.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
Attribute “about” not allowed on element “article” at this point.
Attribute “rel” not allowed on element “div” at this point.
Attribute “datatype” not allowed on element “a” at this point.
Attribute “content” not allowed on element “span” at this point.
Element “h2” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Bad value “_black” for attribute “target” on element “a”: Reserved keyword “black” used.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “navigation” role is unnecessary for element “nav”.
The “complementary” role is unnecessary for element “aside”.
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