html运行实例（css_table_border

代码示例：（标识：css_table_border_1）

<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
  border: 1px solid black;
}
</style>
</head>
<body>

<h1>为表格添加边框：</h1>

<table>
  <tr>
    <th>Firstname</th>
    <th>Lastname</th>
  </tr>
  <tr>
    <td>Bill</td>
    <td>Gates</td>
  </tr>
  <tr>
    <td>Steve</td>
    <td>Jobs</td>
  </tr>
</table>

</body>
</html>