.img-zoomable {
    cursor: pointer;
    max-width: 100%;
    transition: transform 0.25s ease;
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    z-index: 1000;
}

.overlay img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%; 
    max-height: 90%;
}