How can I create this?

[RemcoB27]

Hello, I have been trying to create this effect all the time. When you move your mouse over the image, it moves up. The shadow underneath becomes smaller and more transparent. I can create this with Revolution slider, but I can’t hold it. If you leave your mouse on the image for too long, it disappears.
I don’t know how.

In the link below I have an example.

https://imgur.com/pONYB5R

Ticket