Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “datetime” not allowed on element “span” at this point.
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
No “p” element in scope but a “p” end tag seen.
Duplicate ID “about”.
Duplicate ID “menu-footer2”.
The “font” element is obsolete. Use CSS instead.
Element “center” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
The “for” attribute of the “label” element must refer to a non-hidden form control.
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”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “about” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “menu-footer2” was here.
The “contentinfo” role is unnecessary for element “footer”.
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