Errors:
Duplicate attribute “lang”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “Group-3”.
Duplicate ID “Fill-1”.
Duplicate ID “Fill-4”.
Duplicate ID “Fill-6”.
Duplicate ID “Fill-8”.
Duplicate ID “Fill-10”.
Duplicate ID “Fill-12”.
Duplicate ID “Fill-14”.
Duplicate ID “Fill-16”.
Duplicate ID “Fill-18”.
Duplicate ID “Fill-20”.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
End tag “section” seen, but there were open elements.
Unclosed element “div”.
End tag “br”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
The element “label” must not appear as a descendant of the “label” element.
The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.
Warnings:
The first occurrence of ID “Group-3” was here.
The first occurrence of ID “Fill-1” was here.
The first occurrence of ID “Fill-4” was here.
The first occurrence of ID “Fill-6” was here.
The first occurrence of ID “Fill-8” was here.
The first occurrence of ID “Fill-10” was here.
The first occurrence of ID “Fill-12” was here.
The first occurrence of ID “Fill-14” was here.
The first occurrence of ID “Fill-16” was here.
The first occurrence of ID “Fill-18” was here.
The first occurrence of ID “Fill-20” was here.
“label” element with multiple labelable descendants.
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