Hemenkiralik.com 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”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “true” for attribute “async” on element “script”.
Bad value “navigation” for attribute “role” on element “ul”.
Attribute “alt” not allowed on element “a” at this point.
Bad value “true” for attribute “readonly” on element “input”.
Attribute “readonly” not allowed on element “select” at this point.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Empty heading.
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