       box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
            z-index: 2000;
            display: none;
        }
        
        .modal-header {
            margin-bottom: 20px;
        }
        
        .modal-header h3 {
            margin-top: 0;
        }
        
        .close-button {
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 24px;
            cursor: pointer;
        }
        
        .setting-group {
            margin-bottom: 20px;
   