#pdf-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
}

#pdf-modal .modal-bg {
    background: rgba(0,0,0,.6);
    position: absolute;
    inset: 0;
}

#pdf-modal .modal-body {
    position: relative;
    width: 90%;
    height: 80%;
    margin: 5% auto;
    background: #000;
}

#pdf-modal .close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
}