Ishadeed.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Attribute “width” not allowed on element “symbol” at this point.
Attribute “height” not allowed on element “symbol” at this point.
Element “button” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Bad value “” for attribute “for” on element “label”: An ID must not be the empty string.
Bad value “” for attribute “id” on element “textarea”: An ID must not be the empty string.
The value of the “for” attribute of the “label” element must be the ID of a non-hidden form control.
Warnings:
The “banner” role is unnecessary for element “header”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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