Errors:
Stray start tag “html”.
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.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “language” for attribute “http-equiv” on element “meta”.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “true” for attribute “async” on element “script”.
Bad value “true” for attribute “defer” on element “script”.
No space between attributes.
Stray end tag “ul”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “img1”.
Duplicate ID “img2”.
Duplicate ID “img3”.
Duplicate ID “img4”.
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).
Element “hr” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Bad value “submit” for attribute “type” on element “a”: Subtype missing.
Warnings:
The “banner” role is unnecessary for element “header”.
The first occurrence of ID “img1” was here.
The first occurrence of ID “img2” was here.
The first occurrence of ID “img3” was here.
The first occurrence of ID “img4” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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