Noord-holland.nl W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Bad value “schema.DC” for attribute “rel” on element “link”: The string “schema.DC” is not a registered keyword.
Bad value “schema.OVERHEID” for attribute “rel” on element “link”: The string “schema.OVERHEID” is not a registered keyword.
The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Bad value “/inc/pnh_footer.jsp” for attribute “rel” on element “a”: The string “/inc/pnh_footer.jsp” is not a registered keyword.
The “rev” attribute on the “a” element is obsolete. Use the “rel” attribute instead, with a term having the opposite meaning.
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