Errors:
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Element “meta” is missing required attribute “content”.
Attribute “action” not allowed on element “a” at this point.
Attribute “aria-selected” not allowed on element “span” at this point.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
Bad value “//www.facebook.com/sharer/sharer.php?u=https://gouvernement.lu/fr.html&t=gouvernement.lu // Le gouvernement luxembourgeois” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “//twitter.com/share?url=https://gouvernement.lu/fr.html&text=gouvernement.lu // Le gouvernement luxembourgeois” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “10.03.2018” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
The element “footer” must not appear as a descendant of the “footer” element.
Element “li” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
Stray end tag “a”.
Duplicate ID “topnav”.
Bad value “heading” for attribute “role” on element “li”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
The “article” role is unnecessary for element “article”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “topnav” was here.
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).
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