I can see only 1 module on homepage of your site now and it has this rule:
.item-inner:hover img {
transform: scale(1.1);
transition: all 0.2s ease-in-out;
}
You can override it like:
.item-inner:hover img {
transform: scale(1.3) !important;
transition: all 0.2s ease-in-out !important;
}