Article component using HTML, CSS and JS

In this challenge I wanted to add a specific functionality to the share button. When you click the button it works the way I want it to, but I also wanted that if I clicked anywhere else on the page the tooltip would disappear. I did it on purpose because I like this type of functionality better, but judge for yourself and give it a try. I would appreciate your comments to improve 😉. PS: The only thing I couldn't do was animate the tooltip appearing and disappearing. If you tell me how to do it, much better.