Hi everyone,   I'm very new to GSAP and have little JS experience, but I'm rebuilding my portfolio and would like to implement something that seems very easy but I can't find anything on how to implement this properly.   Basically what I want to do is trigger an animation when someone leaves the page (clicks a link), show a loading screen while the new page loads and when the page is loaded show an inverted animation. It's an overlay of the viewport that I want to animate.