Fressi.fi W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “retina_logo_url” not allowed on element “img” at this point.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
Attribute “<div” not allowed on element “div” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “btn_free_class”.
End tag “div” seen, but there were open elements.
Unclosed element “main”.
Stray end tag “main”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Duplicate attribute “class”.
Warnings:
The “main” role is unnecessary for element “main”.
Attribute “<div” is not serializable as XML 1.0.
The first occurrence of ID “btn_free_class” was here.
The “navigation” role is unnecessary for element “nav”.
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