Sizeer.com W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The first occurrence of ID “top-nav” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Errors:
Bad value “at” for attribute “hreflang” on element “link”: The language subtag “at” is not a valid ISO language part of a language tag.
Bad value “cz” for attribute “hreflang” on element “link”: The language subtag “cz” is not a valid ISO language part of a language tag.
Bad value “at-AT” for attribute “lang” on element “a”: The language subtag “at” is not a valid ISO language part of a language tag.
Bad value “at-AT” for attribute “hreflang” on element “a”: The language subtag “at” is not a valid ISO language part of a language tag.
Bad value “cz-CZ” for attribute “lang” on element “a”: The language subtag “cz” is not a valid ISO language part of a language tag.
Bad value “cz-CZ” for attribute “hreflang” on element “a”: The language subtag “cz” is not a valid ISO language part of a language tag.
Element “false” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “top-nav”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Poland PL