Idpc.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://www.w3.org/1999/xhtml” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).
Attribute “xmlns:fb” not allowed here.
Attribute “addthis:userid” not allowed on element “a” at this point.
Attribute “addthis:usertype” not allowed on element “a” 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.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
Attribute “xmlns” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute “addthis:userid” is not serializable as XML 1.0.
Attribute “addthis:usertype” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
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