Onat.edu.ua W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “uk_UA” for attribute “hreflang” on element “link”: The language subtag “uk_ua” is not a valid language subtag.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “style” not allowed as child of element “header” in this context. (Suppressing further errors from this subtree.)
Attribute value missing.
Element “style” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
No “p” element in scope but a “p” end tag seen.
The “center” element is obsolete. Use CSS instead.
Warnings:
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Ukraine UA