Hachette.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “autobuffer” not allowed on element “video” at this point.
Element “source” not allowed as child of element “video” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “header-nav”.
Element “style” not allowed as child of element “main” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “header-nav” was here.
The “contentinfo” role is unnecessary for element “footer”.
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