Bookshare.org W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “banner” role is unnecessary for element “header”.
The “form” role is unnecessary for element “form”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “complementary” role is unnecessary for element “aside”.
The “contentinfo” role is unnecessary for element “footer”.
Errors:
Attribute “aria-labeledby” not allowed on element “div” at this point.
Bad value “true” for attribute “required” on element “input”.
Bad value “(min-width: 480px)and (max-width: 767px)” for attribute “media” on element “source”: Expected whitespace but saw “a” instead.
Bad value “(min-wdith: 768px) and (max-width: 991px)” for attribute “media” on element “source”: Expected a CSS media feature but saw “min-wdith” instead.
Bad value “(min-width: 992px)and (max-width: 1199px)” for attribute “media” on element “source”: Expected whitespace but saw “a” instead.
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