 by aria-activedescendant like they do for elements with focus.
            When a keyboard event changes the active option in the listbox, the JavaScript scrolls the option referenced by aria-activedescendant into view.
            Managing aria-activedescendant visibility is essential to accessibility for people who use a browser's zoom feature to increase the size of content.
          </li>
          <li>
            To enhance perceivability when operating the combobox, visual keyboard focus and hover 