How to implement a similar functionality of the atlas?

Question

css

Good evening. It is required to implement a similar functionality:

When you click/hover over any area of ​​the picture, the text block would change.
I do not ask you to implement it, but I ask you to suggest in which direction to dig and smoke.

Answer 1

Either image, map, area or svg, polygon

Answer 2

svg + css hover. But it's better to use js because hover doesn't always work.