Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
CSS: “scrollbar-width”: Property “scrollbar-width” doesn't exist.
CSS: “fle-direction”: Property “fle-direction” doesn't exist.
CSS: Unknown pseudo-element or pseudo-class “::ms-clear”.
CSS: Unknown pseudo-element or pseudo-class “:lastchild”
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “header” element.
The element “a” must not appear as a descendant of an element with the attribute “role=button”.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
An element with “role=tab” must be contained in, or owned by, an element with “role=tablist”.
Element “h2” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
CSS: “background-color”: Parse Error.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “id” on element “a”: An ID must not be the empty string.
Duplicate ID “”.
The element “footer” must not appear as a descendant of the “footer” element.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
The “aria-controls” attribute must point to an element in the same document.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “link” role is unnecessary for element “a”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “” was here.
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