Errors:
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
Element “source” is missing required attribute “srcset”.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “content” not allowed on element “span” at this point.
Attribute “datatype” not allowed on element “time” at this point.
Attribute “content” not allowed on element “time” at this point.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “https://track.adform.net/Serving/TrackPoint/?pm=852813&ADFPageName=William%20Kentridge%20pixel&ADFdivider=|” for attribute “src” on element “img”: Illegal character in query: “|” is not allowed.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Text run is not in Unicode Normalization Form C.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in Danish. Consider adding “lang="da"” (or variant) to the “html” start tag.
Denmark DK