e the `aria-activedescendant` property to manage the focus of their active descendants.
Assistive technologies do not require the developer to manipulate the `tabindex` attribute among [focusable elements within the container](https://www.w3.org/WAI/ARIA/apg/practices/keyboard-interface/#kbd_focus_activedescendant).
Instead, only the container element needs to be included in the tab sequence.

Setting the `tabindex` value to `"0"` or greater ensures the element will be included in the tab sequence and allow