Warnings:
Documents should not use “about:legacy-compat”, except if generated by legacy systems that can't output the standard “<!DOCTYPE html>” doctype.
Attribute with the local name “xmlns:xlink” is not serializable as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “main” role is unnecessary for element “main”.
Errors:
Bad value “text/html” for attribute “content” on element “meta”: The legacy encoding declaration did not start with “text/html;”.
Attribute “xmlns:xlink” not allowed here.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
Bad value “imagetoolbar” for attribute “http-equiv” on element “meta”.
Attribute “name” not allowed on element “link” at this point.
Attribute “alt_src” not allowed on element “img” at this point.
Element “img” is missing required attribute “src”.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Stray start tag “options”.
Bad value “true” for attribute “disabled” on element “option”.
Attribute “key” not allowed on element “option” at this point.
Attribute “data” not allowed on element “option” at this point.
Stray end tag “options”.
Element “figcaption” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “tel:088 - 0 885 886 ” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Netherlands NL