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 “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “Layer_2”.
Duplicate ID “Layer_1-2”.
Duplicate ID “Rectangle_375”.
Duplicate ID “Rectangle_376”.
Stray end tag “div”.
Element “h2” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
No “li” element in scope but a “li” end tag seen.
Duplicate ID “a”.
Duplicate ID “b”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Text not allowed in element “iframe” in this context.
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 first occurrence of ID “Layer_2” was here.
The first occurrence of ID “Layer_1-2” was here.
The first occurrence of ID “Rectangle_375” was here.
The first occurrence of ID “Rectangle_376” was here.
The first occurrence of ID “a” was here.
The first occurrence of ID “b” was here.
The “main” role is unnecessary for element “main”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “contentinfo” role is unnecessary for element “footer”.
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