.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    z-index: 999;
}

.overlay .content {
    margin: 2rem auto 0 auto;
    width: 40rem;
    max-width: 90%;
    max-height: 90%;
    overflow: auto;
    z-index: 1000;
    padding: 3rem;
    background: #fff;
    text-align: center;
}

.overlay .content img {
    max-width: 20rem;
    max-height: 15rem;
    margin: 0 auto 2rem auto;
}