#etl-app{max-width:800px;margin:20px auto}#etl-table{width:100%;border-collapse:collapse;margin-bottom:20px}#etl-table th,#etl-table td{border:1px solid #ccc;padding:8px}#etl-form input,#etl-form select,#etl-form button{margin-right:10px;padding:4px}button.delete-btn{background:#e74c3c;color:#fff;border:none;padding:4px 8px;cursor:pointer}button.save-btn{background:#2ecc71;color:#fff;border:none;padding:4px 8px;cursor:pointer}