Enable zoom on lightbox image

Design help Custom code
1

Hello everyone,
I am struggling to enable zoom on light box images on my web shop. Does someone has a solution on this by integrating some custom code.
You can find light box in any product on tab “Mere radijatora”.

Here is my site Read-Only:

https://preview.webflow.com/preview/aleksa-76a58f?utm_medium=preview_link&utm_source=designer&utm_content=aleksa-76a58f&preview=ad83f7e1db0faea623dc275745ccc166&pageId=5f0395f3a2370b993049e14d&mode=preview