在表格视图单元格中添加向下箭头

<table>
  <tr>
    <th>标题1</th>
    <th>标题2</th>
    <th>标题3</th>
  </tr>
  <tr>
    <td>数据1</td>
    <td>数据2</td>
    <td>数据3<span class="arrow">&#x25BC;</span></td>
  </tr>
  <tr>
    <td>数据4</td>
    <td>数据5</td>
    <td>数据6<span class="arrow">&#x25BC;</span></td>
  </tr>
</table>

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

.arrow {
  float: right;
}