Yonja.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “zn” for attribute “hreflang” on element “link”: The language subtag “zn” is not a valid ISO language part of a language tag.
Bad value “gr” for attribute “hreflang” on element “link”: The language subtag “gr” is not a valid ISO language part of a language tag.
Bad value “rs” for attribute “hreflang” on element “link”: The language subtag “rs” is not a valid ISO language part of a language tag.
CSS: “stroke”: Parse Error.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “color” not allowed on element “div” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “selected” not allowed on element “button” at this point.
Attribute “size” not allowed on element “div” at this point.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Attribute “open” not allowed on element “div” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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