Guardanthealth.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
CSS: “background-image”: Parse Error.
No space between attributes.
No “p” element in scope but a “p” end tag seen.
A document must not include more than one visible “main” element.
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