.modal-body {
    height: auto;
}

.div-modal-full-screen {
    position: fixed;
    top: 0;
    height: 100% !important;
    width: 100% !important;
    z-index: 1001;
    left: 0;
    overflow: auto;
    background-color: #fff;
}

    .div-modal-full-screen .modal-content {
        box-shadow: none !important;
    }