Box.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
CSS: “font-smoothing”: Property “font-smoothing” doesn't exist.
CSS: “-ms-grid-columns”: Parse Error.
CSS: “width”: “extend-to-zoom” is not a “width” value.
Bad value “article” for attribute “role” on element “aside”.
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “article” for attribute “role” on element “a”.
Bad value “article” for attribute “role” on element “section”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
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