Weblink (click the CTA link in the hero section to toggle the lightbox modal thats supposed to have fixed position, notice it only works if the scroll position is above the fold, but clicking CTA button below ofld fixed position is not working ) :
First off, I just want to say that I am loving your design so far. Great design system, and (as someone who loves organization) great naming structure as well haha.
If I am understanding correctly, I believe I was able to fix your issue by simply changing your positioning from “Fixed” to “Sticky.” This allows you to scroll down the page, and the form remain in place. Similarly, you can also click the CTA button further down the page and you will still be greeted with the form in the center of your viewport.
Hope this helps. If I misinterpreted what you were asking, please let me know!