Errors:
Element “title” not allowed as child of element “head” in this context. (Suppressing further errors from this subtree.)
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Bad value “site-branding logo” for attribute “id” on element “div”: An ID must not contain whitespace.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bogus comment.
Duplicate ID “widgets”.
Stray end tag “div”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The document is not mappable to XML 1.0 due to a trailing hyphen in a comment.
The first occurrence of ID “widgets” was here.
The “contentinfo” role is unnecessary for element “footer”.
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