Canary.tools W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “main” role is unnecessary for element “main”.
The “charset” attribute on the “script” element is obsolete.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “button” role is unnecessary for element “input” whose type is “submit”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Errors:
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “insert” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
End tag “a” violates nesting rules.
Attribute “type” not allowed on element “label” at this point.
Attribute “name” not allowed on element “label” at this point.
Stray end tag “input”.
Element “a” is missing one or more of the following attributes: “aria-checked”, “role”.
Duplicate attribute “alt”.
Duplicate attribute “value”.
Attribute “type” not allowed on element “textarea” at this point.
Attribute “value” not allowed on element “textarea” at this point.
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