Gallery block on homepage cut off on mobile

Site URL: https://halibut-pug-a53x.squarespace.com/

Hi there, I just finished my site for desktop, but when viewing the site on mobile, the gallery at the top of the page gets cut off horizontally. Is there any CSS I can plug in to show the full image on mobile? 

Thank you so much! I'm on Squarespace 7.1.

Add to Home > Design > Custom CSS

/* Home mobile slide */
@media screen and (max-width:767px) {
.homepage .gallery-fullscreen-slideshow {
    height: 30vh !important;
}
}