since overlay feature released so why not to add a time for that overlay for instance when i click on CTA button overlay popup for specific time i define for 2 seconds then disappeared by itself.
that's like a toast in web design terms simple real life example for this in youtube when you like a video there's a toast/popup show in the bottom left of the screens tells you that you liked this video.
that's gonna be really cool for both website and mobile app to show you if your purchase has bee successfully done or your new settings save for instance.

OLD
second feature request is when the overlay show up the background turn to blur effect ... for clarifying the whole idea behind this it's very simple when overlay show up the page that overlay show in it turns to blur effect also would be awesome if i can specify the range of blur.

look attached files for more clarity.

*as a side note: i would put two different feature requests for both but since i see this two features very associated to each other i put it in one request.