Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “a” is missing one or more of the following attributes: “role”.
The “center” element is obsolete. Use CSS instead.
Element “h1” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The “font” element is obsolete. Use CSS instead.
Heading cannot be a child of another heading.
Element “h3” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Stray end tag “h1”.
Stray end tag “font”.
End tag “h5” seen, but there were open elements.
End tag “h3” seen, but there were open elements.
Stray end tag “center”.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “size” not allowed on element “span” at this point.
End tag “div” seen, but there were open elements.
Unclosed element “h5”.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “height” on element “iframe”: Expected a digit but saw “%” instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
The “banner” role is unnecessary for element “header”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “navigation” role is unnecessary for element “nav”.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
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).
United States US