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 “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The element “a” must not appear as a descendant of the “button” element.
Duplicate ID “login_nav_item”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
Stray end tag “div”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The element “noscript” must not appear as a descendant of the “noscript” element.
Stray end tag “script”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “noscript”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “login_nav_item” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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