How do I make a pop-up full-screen on mobile?

[Nomfphy]

I’m having trouble with
Making full-screen, mobile pop-up

Working in
Wix Studio

Site link

Nomfphy

What I’m trying to do
Make the darkened background take up the whole screen so it’s not chopped

What I’ve tried so far
Making it from scratch (can’t figure how to stop page from scrolling even tho I put overflow: hidden in code)

Extra context
Normal:

CHOPPED (top and bottom):

[Pratham]

@Nomfphy

Make the darkened background take up the whole screen so it’s not chopped

Make the background take up the whole screen? Or are you trying to say ‘Make the popup itself fill up the whole screen’?

If it is the latter, simply turn on Advanced Sizing and set the height of the lightbox to 100vh & width to 100vw. This will not show the overlay at all.

[Nomfphy]

The background. I think I have to use dvw and dvh for it.