Cannot accurately target the code to a single image in grid gallery

For the life of me I can't seem to target an image I'd like to remove from a grid gallery in mobile view. I'm trying to target the second to last image on this page: https://enriquepastor.com/fashion

Help please!?

Thanks,

Vito

Amazing! I can't thank you enough Creedon.

Can you give me some insight on how you targeted it?

This was the closest I got: 
#block-yui_3_17_2_1_1592486068357_51634  .sqs-gallery-block-grid  div.slide img:nth-child(14) {
    display: none;
}

Thank you!