Historiska.se 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.
Bad value “navigation” for attribute “role” on element “ul”.
The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.
Bad value “attachment wp-att-4764” for attribute “rel” on element “a”: The string “wp-att-4764” is not a registered keyword.
No “p” element in scope but a “p” end tag seen.
Warnings:
The “banner” role is unnecessary for element “header”.
“label” element with multiple labelable descendants.
The “main” role is unnecessary for element “main”.
The “article” role is unnecessary for element “article”.
The “contentinfo” role is unnecessary for element “footer”.
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