Errors:
Attribute “xmlns:article” not allowed here.
Attribute “xmlns:book” not allowed here.
Attribute “xmlns:product” not allowed here.
Attribute “xmlns:profile” not allowed here.
Attribute “xmlns:video” not allowed here.
Bad value “revision” for attribute “rel” on element “link”: The string “revision” is not a registered keyword.
Bad value “devel-load” for attribute “rel” on element “link”: The string “devel-load” is not a registered keyword.
Bad value “devel-render” for attribute “rel” on element “link”: The string “devel-render” is not a registered keyword.
Bad value “devel-definition” for attribute “rel” on element “link”: The string “devel-definition” is not a registered keyword.
Bad value “token-devel” for attribute “rel” on element “link”: The string “token-devel” is not a registered keyword.
Bad value “” for attribute “name” on element “button”: Must not be empty.
Bad value “” for attribute “srcset” on element “source”: Must contain one or more image candidate strings.
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “about” not allowed on element “article” at this point.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Bad value “_new” for attribute “target” on element “a”: Reserved keyword “new” used.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Attribute with the local name “xmlns:article” is not serializable as XML 1.0.
Attribute with the local name “xmlns:book” is not serializable as XML 1.0.
Attribute with the local name “xmlns:product” is not serializable as XML 1.0.
Attribute with the local name “xmlns:profile” is not serializable as XML 1.0.
Attribute with the local name “xmlns:video” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “main” role is unnecessary for element “main”.
The “article” role is unnecessary for element “article”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
United States US