    }
        
        .code-output pre {
            margin: 0;
        }
        
        .add-remove-buttons {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }
        
        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 6px;
            font-size: 0.9em;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            flex: 1;
        }
        
        .btn-add {
         