Ipo.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “https://fonts.googleapis.com/css?family=Oxygen:400,300|Archivo+Narrow” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “form” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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