Smaller spacing above gallery

Site URL: https://buffalo-caper-gcs7.squarespace.com/

Hi there! Would love to make the spacing smaller on top of my gallery, underneath the menu.
Have been googling it for hours but haven't been able to figure out how. 

For reference, this is kind of what I'm going for(this is my old website: https://kimikawa.dk/  )

(My Squarespace website ID is 5ec7e491e60b116c887b38b0 )

Hope someone can help, thanks!

Add to Home > Design > Custom CSS

.homepage #page section:nth-child(1) {
    padding-top: 20px !important;
}

You're the best! Thank you so much!