.flex > div {
    position: relative;
    width: 276px;
    height: 190px;
    overflow: hidden;
}

.flex > div img {
    position: absolute;
    z-index: 1;
    width: 100%;
    height:100%;
    object-fit: contain;
    top:0;
    left: 0;;
}

.hover {
    background-image: url("mole.svg");
    background-repeat: no-repeat;
    background-size: 150px auto;
    background-position: center;
    position: relative;
    top: -30px;
    z-index: 2;

}