Hi Ale,
It’s possible with GenerateBlocks, but you’ll need custom CSS. Unfortunately, this level of customization would be out of our scope of support.
Basically, you’ll be playing around with Opacity, Transform and Display CSS rules on hover.
Conceptually, you can find the structure you’ll need to build, and the CSS you need to add here: https://codepen.io/ArnaudBalland/pen/vGZKLr
We would recommend hiring a developer for this if you’re not comfortable with coding.