how to remove the top border from table react bootstrap

import React from 'react';
import Table from 'react-bootstrap/Table';

const CustomTable = () => {
  return (
    <Table bordered>
      <thead>
        <tr>
          <th>#</th>
          <th>Header</th>
          <th>Header</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td>1</td>
          <td>Data</td>
          <td>Data</td>
        </tr>
      </tbody>
    </Table>
  );
};

export default CustomTable;