Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Element “script” must not have attribute “defer” unless attribute “src” is also specified.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “submenu-li”.
Duplicate ID “submenu-ul”.
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The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “submenu-m-li”.
Duplicate ID “submenu-m-ul”.
Duplicate ID “gc-number”.
No “p” element in scope but a “p” end tag seen.
Bad value “340px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “301px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
No space between attributes.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
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 “button” role is unnecessary for element “button”.
The first occurrence of ID “submenu-li” was here.
The first occurrence of ID “submenu-ul” was here.
The first occurrence of ID “submenu-m-li” was here.
The first occurrence of ID “submenu-m-ul” was here.
The first occurrence of ID “gc-number” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Empty heading.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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