.image-container {
    position: relative;
    overflow: hidden;
    width: 10rem; // can differ
    height: 10rem; // can differ
}

.image {
    position: absolute;
    top: 50%;
    left: 50%;
    min-height: 100%;
    min-width: 100%;
    height: auto;
    width: auto;
    max-width: none;
    max-height: none;
    transform: translate3d(-50%, -50%, 0);
}