.modal {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;

    width: 100vw !important;
    height: 100vh !important;

    overflow-y: auto;
    z-index: 1050;
}

.modal.in {
    display: block !important;
}

.modal-dialog {
    position: relative;
    width: 90%;
    max-width: 1000px;
    margin: 20px auto !important;
}

.modal-content {
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}