The scroll-timeline Css shorthand property is used to define a named scroll progress timeline, which is progressed through by scrolling a scrollable element (scroller) between top and bottom (or left and right). scroll-timeline is set on the scroller that will provide the timeline. The starting scroll position represents 0% progress and the ending scroll position represents 100% progress. If the 0% position and 100% position coincide (i.e., the scroll container has no overflow to scroll), the timeline is inactive.... The scroll-timeline CSS shorthand property is used to...shorthand for the following CSS properties: scroll-timeline-name...