Penalreform.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
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 “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “hgroup” is missing a required instance of one or more of the following child elements: “h1”, “h2”, “h3”, “h4”, “h5”, “h6”.
Duplicate ID “prev”.
Duplicate ID “next”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “document” role is unnecessary for element “body”.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “prev” was here.
The first occurrence of ID “next” was here.
The “article” role is unnecessary for element “article”.
The “contentinfo” role is unnecessary for element “footer”.
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