Сlosing modal window

[fetfurmoz1985]

https://codepen.io/xvjelsst-the-reactor/pen/dPbpreW

https://g1t.ru/video/chrome_JBBo663zkp.mp4

Hello.
I close the gallery, and the modal window closes too. How can I make it so that the modal window doesn’t close, but only the gallery? How to leave the First modal window ?

2. Question number two. Site: https://harsika.ru/catalog/

https://g1t.ru/video/chrome_yUobjqqXRr.mp4

second question, please tell me how to remove the scroll from the first modal window?