How to lay out this block with steps or what is this animation called at least?

Question

css

There is such a block and the essence, probably, is clear to you, but I will explain it again just in case. When you press the button, you will move to another step and this block with a new step will appear. In this case, the green strip will also be filled with green.

If you do not know how, then it would be enough to know the name of this

Answer 1

dot slider. use slick