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.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “div” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “hgroup” is missing a required instance of one or more of the following child elements: “h1”, “h2”, “h3”, “h4”, “h5”, “h6”.
Element “a” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “form” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Stray end tag “button”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “ontouchstart” not allowed on element “div” at this point.
The element “button” must not appear as a descendant of the “a” element.
The element “main” must not appear as a descendant of the “article” element.
Bad value “tel:+32%202 808 04 20” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “complementary” for attribute “role” on element “footer”.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “navigation” role is unnecessary for element “nav”.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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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