The view() CSS function can be used with animation-timeline to indicate a subject element that will provide an anonymous view progress timeline to animate. The view progress timeline is progressed through by a change in visibility of the subject element inside the nearest ancestor scroller. The visibility of the subject inside the scroller is tracked — by default, the timeline is at 0% when the subject is first visible at one edge of the scroller, and 100% when it reaches the opposite edge.... For horizontal writing modes, such as standard...flow of text in a line. For horizontal writing modes, this is the...