How to reduce height space on Gallery Grid Block?

Site URL: https://carasmanagement.com/caras

Hi, I need assistance please on how two reduce the height *only* on gallery block/page?

It seems like there's only an option for the sides in between images, but not for the height.

Thank you for your help.  

Also, dealing with this random big space at the bottom of page. How should I reduce it?

Thank you.

Add to Caras Page Header

<style>
  @media screen and (max-width:767px) {
  [data-section-id="623d068b1bca4b1d904af41b"] {
    display: none;
}
  }
</style>

It seems like the code before didn't work. 

Please see screenshot attached for this new link: https://carasmanagement.com/marina-falcon

Something changed within Squarespace, and since then, it gives me these random big empty space on galleries on Phone view specially. 

How do I get rid of these empty spaces?

Thank you.

Add this to Design > Custom CSS

@media screen and (max-width:767px) {
.fe-62f14fe2ea386b7e17400455 {
    grid-template-rows: repeat(9,minmax(6vw, auto)) !important;
}
}