https://developer.chrome.com/blog/entry-exit-animations/
Four new CSS features for smooth entry and exit animations | Blog | Chrome for Developers
Learn about new capabilities that enable smooth transitioning of discrete animations and between the top layer
four newcss featuressmooth
https://pawelgrzybek.com/popover-element-entry-and-exit-animations-in-a-few-lines-of-css/
Popover element entry and exit animations in a few lines of CSS | pawelgrzybek.com
Creating entry and exit animations for elements has always been tedious. Nowadays, we can do it with just a few lines of pure CSS, without a single line of JS.
exit animationspopoverelement