Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “title”.
Element “style” not allowed as child of element “main” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “https://www.w3.org/2000/svg” for the attribute “xmlns” (only “http://www.w3.org/2000/svg” permitted here).
Bad value “https://www.w3.org/1999/xlink” for the attribute “xmlns:link” (only “http://www.w3.org/1999/xlink” permitted here).
Attribute “xmlns:a” not allowed here.
Element “dl” is missing a required instance of child element “dd”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The first occurrence of ID “title” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “xmlns” is not serializable as XML 1.0.
Attribute “xmlns:xlink” with a value other than “http://www.w3.org/1999/xlink” is not serializable as XML 1.0 without changing document semantics.
Attribute with the local name “xmlns:a” is not serializable as XML 1.0.
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