Nbcuniversal.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
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 “span” in this context. (Suppressing further errors from this subtree.)
Bad value “only screen (min-width:0px) and (max-width:384px)” for attribute “media” on element “source”: Expected whitespace or “and” but saw “(” instead.
Element “img” is missing required attribute “src”.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
Element “div” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
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