Emacsredux.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Bad value “subscribe-rss” for attribute “rel” on element “a”: The string “subscribe-rss” is not a registered keyword.
Attribute “results” not allowed on element “input” at this point.
Attribute “pubdate” not allowed on element “time” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “img”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
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).
The “contentinfo” role is unnecessary for element “footer”.
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