Between.us W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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:
Bad value “zh_hans” for attribute “hreflang” on element “link”: The language subtag “zh_hans” is not a valid language subtag.
Bad value “zh_hant” for attribute “hreflang” on element “link”: The language subtag “zh_hant” is not a valid language subtag.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “br” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “comment” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
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