Problems with the module window, flickering how to remove?

Question

css

I set a simple module window without using js, on bare html and css. And when you click on the button, the window appears but not correctly and it flickers terribly when hovering over it. I can't figure out why. and the same problem when I took a ready-made window from the Internet. Tell me what's the problem?

kuptso4c.beget.tech/pay-chester#openModal

Answer 1

This is because on hover on .pay-block-packet you have transform: scale(1.1);
Remove it and everything will be fine.
If you want to save the scale, then take out the block with the modal window from the .pay-block-packet block