Preshing.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 “follow-twitter” for attribute “rel” on element “a”: The string “follow-twitter” is not a registered keyword.
Bad value “subscribe-rss” for attribute “rel” on element “a”: The string “subscribe-rss” is not a registered keyword.
Attribute “pubdate” not allowed on element “time” at this point.
Bad value “full-article” for attribute “rel” on element “a”: The string “full-article” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
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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