Ncwit.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:og” not allowed here.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Element “div” is missing one or more of the following attributes: “role”.
Duplicate attribute “class”.
Bad value “” for attribute “id” on element “ul”: An ID must not be the empty string.
Duplicate ID “”.
Attribute “about” not allowed on element “div” at this point.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “” was here.
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