How To Create Bouncing Ball Animation Using HTML and CSS | Simple CSS Animation Project - YouTube
Bouncing a Ball Around with HTML5 and JavaScript - WebFX
✨ NEW tutorial: Create a bouncing ball in CSS. What you'll learn: ✓ Animation property ✓ Timing functions (ease-in, ease-out...) ✓ Plenty of cool CSS... | By CodyHouse | Facebook
Tutorial: Make a Bouncing Ball Entirely with CSS | by Brandon Morelli | codeburst