Eliminate white space between two sections

[AtlasPrints]

Good morning,

I would like to eliminate, or at least reduce, a white space between a Rich Text section and a review slider (I installed an external app for that). From the basic costume settings I can't get them any closer than this. The theme used is 'Studio'

I've already looked at the code but there doesn't seem to be anything between the two sections.

I'm asking someone more experienced for help.

Thanks

Matteo