I didn't get you made Draggable... Furthermore in my Screenshot, when I scroll down, from Point A to Point B, it'll be changed from grey to Blue and the same for Point B to Point C, which means all three will be selected, so Draggable will be required for not?
Furthermore, I noticed that if I remove the `data-draggable` from the navbar code, then when I scroll down it does not update the timeline years, like from 1993 to 1995 and so on.