Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
Attribute “<header” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Errors:
No space between attributes.
Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
Duplicate attribute “id”.
Attribute “<header” not allowed on element “header” at this point.
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “center” seen, but there were open elements.
Unclosed element “div”.
Attribute “http-equiv” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Text not allowed in element “ul” in this context.
No “p” element in scope but a “p” end tag seen.
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