Manualeduso.it W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Element “search” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “dk” for attribute “hreflang” on element “a”: The language subtag “dk” is not a valid ISO language part of a language tag.
Bad value “cz” for attribute “hreflang” on element “a”: The language subtag “cz” is not a valid ISO language part of a language tag.
Duplicate attribute “rel”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Attribute “v-bind:placeholder” is not serializable as XML 1.0.
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