Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
The first occurrence of ID “keywords” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “Layer_1” was here.
The first occurrence of ID “logomark” was here.
The “navigation” role is unnecessary for element “nav”.
Attribute “<” is not serializable as XML 1.0.
Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
The element “header” must not appear as a descendant of the “header” element.
Duplicate ID “keywords”.
The “frameborder” attribute on the “iframe” element is obsolete.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.
No “p” element in scope but a “p” end tag seen.
Element “p” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Duplicate ID “Layer_1”.
Element “style” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
End tag “aside” seen, but there were open elements.
Unclosed element “section”.
Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
A slash was not immediately followed by “>”.
End tag had attributes.
Stray end tag “l”.
End tag “div” seen, but there were open elements.
Unclosed element “ul”.
Duplicate ID “logomark”.
Attribute “<” not allowed on element “script” at this point.
Attribute “script” not allowed on element “script” at this point.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “<” instead.
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