Revealing items only when outside the viewport

Hello,
Is it possible to only reveal the elements that are outside the viewport?
I don't want the elements that are visible when entering to the page to reveal, but only the ones outside the viewport as you start to scroll.

Is this something doable?

Thanks for the good work

No file, test, or entry point is identified. First inspect the existing JavaScript scroll-reveal behavior and determine how initially visible elements differ from elements encountered while scrolling. Done means the requested behavior is clearly defined and implemented with verification for both initial page load and subsequent scrolling.

Written by the indexing model from the issue text.