Open the folder and its five files rise out in a staggered fan, each tilted at its own angle, with a search bar and a file count popping in above.
How it works
The whole folder is a label wrapped around a hidden checkbox, so a click, a tap, or Space toggles it with no JavaScript. Every moving part hangs off :checked ~ selectors, and staggered transition-delay values send the files out one after another.
The front panel tips back with rotateX inside a perspective, which is what sells the lid opening.