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.
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
Element “img” is missing required attribute “src”.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
Stray end tag “section”.
End tag “article” seen, but there were open elements.
Unclosed element “div”.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
Attribute “href” not allowed on element “button” at this point.
The “aria-controls” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “contentinfo” role is unnecessary for element “footer”.
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