Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute with the local name “xmlns:cc” is not serializable as XML 1.0.
Attribute with the local name “xmlns:dct” is not serializable as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Errors:
Bad value “screen,projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “xmlns:cc” not allowed here.
Attribute “xmlns:dct” not allowed here.
Attribute “about” not allowed on element “div” at this point.
Bad value “cc:attributionURL” for attribute “rel” on element “a”: The string “cc:attributionURL” is not a registered keyword.
Bad value “yes” for attribute “preload” on element “video”.
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
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