Disable hover effect on poster image

Site URL: https://the-dead-rabbit.squarespace.com/

I've tried countless bits of css and I can't seem to remove the hover effect. When the image is linked, it creates a rollover hover effect which I think is built into SQSP site styles. I would like to remove this effect. The images are on the homepage https://the-dead-rabbit.squarespace.com/

See screenshot attached - help please! 

Password is: hello123

Design > Custom CSS

/* Disable poster zoom on hover */
.design-layout-poster img {
    transform: unset !important;
}