Therapidian.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” not allowed here.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
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.
The element “button” must not appear as a descendant of the “a” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “photo” not allowed on element “div” at this point.
Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
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.
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