In terms of UX and a11y, please add a <form> for the Next button, so that we can do next without having to click (pressing enter, or even allow right key). Same

In terms of UX and a11y, please add a <form> for the Next button, so that we can do next without having to click (pressing enter, or even allow right key). Same for the Language creator / Serial killer buttons, use a <form>