.modal-fullscreen {
    padding: 0 !important;
}

    .modal-fullscreen .modal-fullscreen-dialog {
        width: 100% !important;
        max-width: none !important;
        height: 100% !important;
        margin: 0 !important;
    }

    .modal-fullscreen .modal-fullscreen-content {
        height: 100% !important;
        border: 0 !important;
        border-radius: 0 !important;
    }

    .modal-fullscreen .modal-fullscreen-body {
        overflow-y: auto !important;
        padding: 0 !important;
    }