[Joe Watkins, a11y] @jiatyan if you put effort into handling the focus state for the user the AT should be set up for success. Send focus to the modal, give them the ability to close the modal, handle focus on close of modal sending them back to where they came from in the DOM, disallow focus to other page elements while modal is open, describe the modal experience to AT aria-describedby, leverage role="dialog",.. and use great markup in the modal and you should be ok.