Can anyone help me understand how to make the icons move arround?

Question

In the web page https://web.certicamara.com/ they use very nice icons that rotate just once when you put the mouse over the icon. Can you help me understand how they do it.
Thank you very much.

Answer 1

elem:hover{
transform: rotate();
and so on...😂😂😂
}

Answer 2

Great, thank you for your answer and this makes it rotate just once?