Errors:
Bad value “revision” for attribute “rel” on element “link”: The string “revision” is not a registered keyword.
Bad value “true” for attribute “defer” on element “script”.
Attribute “hreflang” not allowed on element “li” at this point.
The “font” element is obsolete. Use CSS instead.
Attribute “css” not allowed on element “a” at this point.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Element “div” is missing one or more of the following attributes: “role”.
Attribute “type” not allowed on element “iframe” at this point.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “complementary” role is unnecessary for element “aside”.
The “main” role is unnecessary for element “main”.
The “article” role is unnecessary for element “article”.
The “charset” attribute on the “script” element is obsolete.
The “type” attribute is unnecessary for JavaScript resources.
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