使表格垂直和水平居中，并能够滚动表格

<div class="table-container">
  <table>
    <thead>
      <tr>
        <th>表头1</th>
        <th>表头2</th>
        <th>表头3</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>数据1</td>
        <td>数据2</td>
        <td>数据3</td>
      </tr>
      <!-- 添加更多行 -->
    </tbody>
  </table>
</div>

.table-container {
  width: 100%;
  height: 300px; /* 设置合适的高度 */
  overflow: auto;
}

table {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

thead th, tbody td {
  text-align: center;
}