Gocoderz.com 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.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
Bad value “field” for attribute “role” on element “div”.
Bad value “phone” for attribute “type” on element “input”.
Attribute “(999)999-9999” not allowed on element “input” at this point.
Attribute “value” not allowed on element “textarea” 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.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Empty heading.
The “form” role is unnecessary for element “form”.
Attribute “(999)999-9999” is not serializable as XML 1.0.
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