Errors:
Bad value “crossorigin” for attribute “crossorigin” on element “link”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “img” is missing required attribute “src”.
The element “header” must not appear as a descendant of the “header” element.
Bad value “none” for attribute “role” on element “ul”.
Bad value “none” for attribute “role” on element “button”.
Attribute “f-multi-parent” not allowed on element “button” at this point.
Bad value “PCetappareils
-navigation” for attribute “id” on element “button”: An ID must not contain whitespace.
Bad value “combobox” for attribute “role” on element “input”.
Attribute “aria-setsize” not allowed on element “button” at this point.
Attribute “aria-posinset” not allowed on element “button” at this point.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Bad value “presentation” for attribute “role” on element “section”.
Element “source” is missing required attribute “srcset”.
The element “footer” must not appear as a descendant of the “footer” element.
Bad value “contentinfo” for attribute “role” on element “ul”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “banner” role is unnecessary for element “header”.
“role="none"” is not yet supported in all browsers. Consider instead either using “role="presentation"” or “role="none presentation"”.
The “navigation” role is unnecessary for element “nav”.
The “region” role is unnecessary for element “section”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
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