Errors:
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.
Bad value “screen, projection, tty, tv” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Attribute “0” not allowed on element “a” at this point.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “content” not allowed on element “span” at this point.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Forbidden code point U+0080.
Forbidden code point U+0099.
Forbidden code point U+0081.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “0” is not serializable as XML 1.0.
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