如何创造一个气泡旋转木马?

On this google open source project page, you will see a bubble carousel. There is one big bubble in the center and a lot of small bubbles moving around the big one. There are left and right arrows where you can click on, and it will animate in one of the small bubble into the big one. If you just leave it alone, it animates the small bubble into the big one at a time.On this google open source project page, you wi