Probe.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
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 “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “xmlns:v” not allowed here.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
No “p” element in scope but a “p” end tag seen.
Duplicate ID “facebookwidgetplus-2”.
Duplicate ID “fb-root”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Duplicate ID “security”.
A document must not include more than one “autofocus” attribute.
Warnings:
Attribute with the local name “xmlns:v” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “facebookwidgetplus-2” was here.
The first occurrence of ID “fb-root” was here.
The first occurrence of ID “security” was here.
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