This is a simple :hover on buttons using transition and box-shadow inset css3 property.... | Inset, Shadow, Shadow box
Topic: transition, box-shadow and percent unit / sciter
Get a smooth #animation with a #3D card effect using box shadow, #CSS animations and a pseudo element. Sw… | Css tutorial, Web development design, Login page design
How to CSS-Only Overlays Effect with Box-Shadow - Hongkiat