Howtodothings.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:og” not allowed here.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Attribute “alt” not allowed on element “a” at this point.
Element “fb:like” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “g:plusone” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “0-3” for attribute “rel” on element “a”: The string “0-3” is not a registered keyword.
Bad value “3-6” for attribute “rel” on element “a”: The string “3-6” is not a registered keyword.
Bad value “6-9” for attribute “rel” on element “a”: The string “6-9” is not a registered keyword.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Element name “fb:like” cannot be represented as XML 1.0.
Element name “g:plusone” cannot be represented as XML 1.0.
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