.gal-item {
    float: left;
    padding: 0;
    margin: 0;
    opacity: 1;
    height: 400px;
}
.gal-item:hover {
    opacity: 0.95;
}
.gal-item a {
    width: 100%;
    height: 100%;
}
.gal-item a img {
    width: 100%;
    object-fit: cover;
}