How to close the menu on clicking on an empty space?

Question

JavaScript

Faced a problem that does not allow closing the menu when clicking on an empty space, as well as an overlap problem When

menu 1 overlaps menu 2 or vice versa

https://jsfiddle.net/msLzreda/

norms

example can be seen here - https://newcsgosettings.at.ua/

I also can't figure out why opening the menu doesn't work on small screens

Answer 1

document.getElementsByTagName('body')[0].onclick = () => { alert('I`m closed!')}

And then process the rest by event, through parents.