Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
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 “button” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “Layer_1”.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The element “h4” must not appear as a descendant of the “th” element.
Stray end tag “td”.
Element “figure” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “article” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “nav” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
No “p” element in scope but a “p” end tag seen.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The first occurrence of ID “Layer_1” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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