Errors:
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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
Attribute “about” not allowed on element “article” at this point.
Duplicate ID “main-content”.
Duplicate ID “dfp-ad-halfpage_tablet-wrapper”.
Duplicate ID “dfp-ad-halfpage_tablet”.
Duplicate ID “dfp-ad-halfpage_mobile-wrapper”.
Duplicate ID “dfp-ad-halfpage_mobile”.
End tag “p” implied, but there were open elements.
Unclosed element “a”.
End tag “p” seen, but there were open elements.
No “p” element in scope but a “p” end tag seen.
Bad value “http://www.explorator.lu/en/restaurants/bei-den-zwillingen-tennis-club>” for attribute “href” on element “a”: Illegal character in path segment: “>” is not allowed.
Attribute “default” not allowed on element “option” at this point.
Element “span” is missing one or more of the following attributes: “role”.
The “center” element is obsolete. Use CSS instead.
The element “header” must not appear as a descendant of the “footer” element.
Element “div” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Element “noindex” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “document” role is unnecessary for element “body”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “banner” role is unnecessary for element “header”.
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 “main-content” was here.
The first occurrence of ID “dfp-ad-halfpage_tablet-wrapper” was here.
The first occurrence of ID “dfp-ad-halfpage_tablet” was here.
The first occurrence of ID “dfp-ad-halfpage_mobile-wrapper” was here.
The first occurrence of ID “dfp-ad-halfpage_mobile” was here.
This document appears to be written in English but the “html” start tag has “lang="fr"”. Consider using “lang="en"” (or variant) instead.
Azerbaijan AZ