Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Empty heading.
The first occurrence of ID “collapse10” was here.
“label” element with multiple labelable descendants.
Errors:
Stray end tag “div”.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Stray end tag “input”.
Attribute “allowfullscreen” not allowed on element “img” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “img”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Attribute “href” not allowed on element “h6” at this point.
Duplicate ID “collapse10”.
The element “label” must not appear as a descendant of the “label” element.
Element “header” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Element “form” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.
Duplicate attribute “class”.
Any “button” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
The “aria-controls” attribute must point to an element in the same document.
The “aria-labelledby” attribute must point to an element in the same document.
Netherlands NL