Sedo.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “us” for attribute “lang” on element “html”: The language subtag “us” is not a valid ISO language part of a language tag.
Attribute “csrf_token” not allowed on element “html” at this point.
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “h4” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “h3” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “footer” element.
End of file seen and there were open elements.
Unclosed element “a”.
Unclosed element “ul”.
Unclosed element “nav”.
Unclosed element “div”.
Unclosed element “footer”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “main” role is unnecessary for element “main”.
Empty heading.
This document appears to be written in English but the “html” start tag has “lang="us"”. Consider using “lang="en"” (or variant) instead.
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