.img-gallery-list {
    margin:0px auto;
    list-style:none;
    padding:0;
    columns:4 350px;
    gap:20px;
}

.img-gallery-item {
    width:100%;
    margin-bottom:20px;
}

.img-gallery-img {
    height: 100%;
    width: 100%;
    object-fit: contain;
    vertical-align: middle;
    opacity: 0.8;
    transition: 0.3s;
}

.img-gallery-img:hover {
    opacity:1;
}