Playm.de 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.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “sv_user_login form-control” for attribute “for” on element “label”: An ID must not contain whitespace.
Bad value “sv_user_login form-control” for attribute “id” on element “input”: An ID must not contain whitespace.
Bad value “sv_user_pass form-control” for attribute “for” on element “label”: An ID must not contain whitespace.
Bad value “sv_user_pass form-control” for attribute “id” on element “input”: An ID must not contain whitespace.
Bad value “sv_rememberme form-control” for attribute “id” on element “input”: An ID must not contain whitespace.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
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