> ARIA Expanded
A disclosure is a widget that allows content to be
collapsed (hidden) or expanded (visible). It has two elements:
1. Disclosure button, and
2. Section of content whose visibility is controlled by the button.
ARIA Expanded must be applied to the disclosure button element
or the element with role="button" rather than the content.
> ARIA label
Move the icon title and aria-label as they are not
interactive elements to the toggle element.
The title attribute is helpful for the tooltip,
and the aria-label benefits the screen reader.
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