Gallery Slideshow is not being responsive to zoom in or out of browser window

Hello - I am wondering if there is a code to fix this, when zoomed at 100% website looks like this on desktops, as it should - however see the second image -  if I zoom out to 33% for example, the gallery is not being responsive., this is happening on some other pages as well, and leaving the wide blank space along the side. Also note that I had issues with the Mobile view with the gallery but I was able to fix it with code. This did not happen on the old version of square space, only noticing it on 7.1. Thank you in advance for any help.

https://www.nexussolutions.com/ for reference this is our site.

Try adding to Website Tools (under Not Linked) > Custom CSS

body {
    --sqs-site-max-width: 10000px !important;
}