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”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Element “meta” is missing one or more of the following attributes: “charset”, “content”, “http-equiv”, “itemprop”, “name”, “property”.
Bad value “screen, projector, print” for attribute “media” on element “link”: Expected a CSS media type but the query ended.
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
Duplicate attribute “class”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “button” must not appear as a descendant of the “a” element.
End tag “a” violates nesting rules.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “true” for attribute “async” on element “script”.
No space between attributes.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Stray start tag “script”.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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