Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “undefined-0” was here.
The first occurrence of ID “” was here.
The first occurrence of ID “undefined-1” was here.
The first occurrence of ID “undefined-2” was here.
The first occurrence of ID “undefined-3” was here.
The first occurrence of ID “undefined-4” was here.
The first occurrence of ID “undefined-5” was here.
The first occurrence of ID “undefined-6” was here.
The first occurrence of ID “undefined-7” was here.
The first occurrence of ID “undefined-8” was here.
The first occurrence of ID “undefined-9” was here.
The first occurrence of ID “undefined-10” was here.
The first occurrence of ID “undefined-11” was here.
The first occurrence of ID “undefined-12” was here.
The first occurrence of ID “undefined-13” was here.
The first occurrence of ID “undefined-14” was here.
The first occurrence of ID “undefined-15” was here.
Empty heading.
Errors:
Bad value “” for attribute “media” on element “source”: Media query ended prematurely.
The element “button” must not appear as a descendant of the “a” element.
Bad value “” for attribute “id” on element “a”: An ID must not be the empty string.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “undefined-0”.
Duplicate ID “”.
Element “div” not allowed as child of element “h4” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “undefined-1”.
Duplicate ID “undefined-2”.
Duplicate ID “undefined-3”.
Duplicate ID “undefined-4”.
Duplicate ID “undefined-5”.
Duplicate ID “undefined-6”.
Duplicate ID “undefined-7”.
Duplicate ID “undefined-8”.
Duplicate ID “undefined-9”.
Duplicate ID “undefined-10”.
Duplicate ID “undefined-11”.
Duplicate ID “undefined-12”.
Duplicate ID “undefined-13”.
Duplicate ID “undefined-14”.
Duplicate ID “undefined-15”.
Element “div” not allowed as child of element “span” 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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “for” attribute of the “label” element must refer to a non-hidden form control.
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