Rcot.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
Stray end tag “link”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
Bad value “article” for attribute “role” on element “a”.
Attribute “addthis:title” not allowed on element “div” at this point.
Attribute “addthis:url” not allowed on element “div” at this point.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “article” role is unnecessary for element “article”.
Attribute “addthis:title” is not serializable as XML 1.0.
Attribute “addthis:url” is not serializable as XML 1.0.
The “contentinfo” role is unnecessary for element “footer”.
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