#sil-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

#sil-lightbox img {
    max-width: 80%;
    max-height: 80%;
    display: block;
    margin: 10% auto;
}

#sil-close {
    position: absolute;
    top: 10px;
    right: 20px;
    color: white;
    font-size: 30px;
    cursor: pointer;
}