Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
End tag “br”.
Duplicate attribute “alt”.
Element “div” is missing one or more of the following attributes: “role”.
Attribute “href” not allowed on element “button” at this point.
No “p” element in scope but a “p” end tag seen.
Element “p” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “_b” for attribute “target” on element “a”: Reserved keyword “b” used.
End tag “li” seen, but there were open elements.
Unclosed element “a”.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “contentinfo” role is unnecessary for element “footer”.
United States US