.gallery-img-wrap {
    width: 22%;
    padding-top: 22%;
    margin: 1%;
    position: relative;
    overflow: hidden;
    border-radius: 6px;
    display: inline-block;
    vertical-align: top;
}

.gallery-img-wrap img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}