Best-sci-fi-books.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:wb” not allowed here.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
No “p” element in scope but a “p” end tag seen.
Duplicate ID “recent-posts-2”.
Duplicate ID “categories-2”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
Attribute with the local name “xmlns:wb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “recent-posts-2” was here.
The first occurrence of ID “categories-2” was here.
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).
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