Windowsphoneinfo.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:fb” 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”.
Bad value “up” for attribute “rel” on element “a”: The string “up” is not a registered keyword.
Bad value “Menu” for attribute “rel” on element “a”: The string “Menu” 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:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “date” input type is not supported in all browsers. Please be sure to test, and consider using a polyfill.
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