Section one

Scroll this box to see the active link change.

Lorem ipsum dolor sit, amet consectetur adipisicing elit. Provident necessitatibus temporibus soluta explicabo quia earum ad aliquid reprehenderit officiis facilis fugiat rerum amet, aliquam dignissimos commodi quis assumenda nemo esse?

Lorem ipsum dolor sit, amet consectetur adipisicing elit. Provident necessitatibus temporibus soluta explicabo quia earum ad aliquid reprehenderit officiis facilis fugiat rerum amet, aliquam dignissimos commodi quis assumenda nemo esse?

Scrollspy watches which section is in view.

Section two

The link for this section becomes active.