I'm making a set of simple react components useful for all kinds of apps. Today I'm making a collapsible element you can show or hide by clicking on a button. 00:00 Example collapsible 00:38 Project setup 04:55 Basic collapsible component 15:16 Styling the collapsible with css 20:21 Animating the collapsible 24:00 Fixing the animation with useRef 33:48 Outro