Errors:
Attribute “async” not allowed on element “link” at this point.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “button” must not appear as a descendant of the “a” element.
No space between attributes.
No “p” element in scope but a “p” end tag seen.
Attribute “placeholder” not allowed on element “button” at this point.
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Bad value “312px” for attribute “height” on element “video”: Expected a digit but saw “p” instead.
End tag “li” seen, but there were open elements.
Unclosed element “a”.
No “a” element in scope but a “a” end tag seen.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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).
Netherlands NL