I have a VStack with multiple child views (the one with blue background). The VStack has horizontal padding. I want to have this padding set for each child, but sometimes I have exception where I want that child to reach edges of the display completely (Two grey lines above "Checkout" button). Is there any way how to allow this to happen? I don't wanna set padding for every single child separately.

You can apply a negative padding on the view that you applied on the VStack, that means if you applied a padding of 16 points to the VStack like this for example
.padding(16)
for all directions which is the default. then you can apply a.padding(.horizontal,-16)
to the lines and they will stretch to the end of the screenhere is a sample code and a screenshot for the behavior you want.