1.效果

2.模版

 <table
      border="1"
      cellpadding="0"
      cellspacing="0"
      class="tablebor"
      id="TABLE"
    >
      <tr align="center" class="bg217">
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列1</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列2</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列3</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列4</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列5</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列6</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列7</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列8</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列9</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列10</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列11</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列12</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列13</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列14</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列15</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列16</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列17</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列18</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列19</td>
        <td style="background-color: #008000; color: #ffffff;padding: 10px 15px;">列20</td>
      </tr>
      <tr align="center" id="TR">
        <td rowspan="3">1</td>
        <td rowspan="3">2</td>
        <td rowspan="3">3</td>
        <td rowspan="3">4</td>
        <td rowspan="3">5</td>
        <td rowspan="3">6</td>
        <td rowspan="3">7</td>
        <td rowspan="3">8</td>
        <td rowspan="3">9</td>
        <td rowspan="3">10</td>
        <td rowspan="3">11</td>
        <td rowspan="3">12</td>
        <td rowspan="3">13</td>
        <td rowspan="3">14</td>
        <td rowspan="3">15</td>
        <td rowspan="3">16</td>
        <td rowspan="3">17</td>
        <td>18</td>
        <td>19</td>
        <td>20</td>
      </tr>
      <tr align="center">
        <td>88888888</td>
        <td>99999999</td>
        <td>77777777</td>
      </tr>
      <tr align="center">
        <td>1111111111111</td>
        <td>2222222222</td>
        <td>333333333</td>
      </tr>
    </table>