Zoom effect on hover on products and how to find the right ID

Site URL: https://www.lunamoonstudios.com/

Hi,

I have figured out how to make a "zoom on hover" in the simple image gallery. I have trouble finding out how to do on products and how to find the ID I have to refer to in the CSS.

What I have made that works: 

https://www.lunamoonstudios.com/

I would like to make the same effect on this "test page"

Can you share link to test page?

Update for anyone has same problem on Product Pages. Use this code to Custom CSS box.

div.grid-item:hover img {
    transform: scale(1.5);
    transition: transform 0.3s ease;
}