SOURCE

<table>
  <caption>队伍表格</caption>
  <thead>
    <tr>
      <th>组别
      <th>性别
      <th>年龄
  <tfoot>
    <tr>
      <td colspan="3">（注：表格分享）
  <colgroup>
    <col span="2" width="100">
    <col span="1" class="last-col"> 
  <tbody>
    <tr>
      <td rowspan="2">一组
      <td>男
      <td>24
    <tr>
      <td>男
      <td>25
  <tbody>
    <tr>
      <td>二组
      <td>女
      <td>24
</table>

table {
  margin: 20px;  
  border: 1px solid #ccc;
  background: #91daff;
}
th,td {
  border: 1px solid #ccc;
  font-size: 18px;
  text-align: left;
}
td {
  background: white;
}
tr {
  background: yellow;
}
tbody {
  background: green;
}
tfoot td {
  font-size: 12px;
  text-align: center;
}
.last-col {
  background: pink;
}
caption {
  margin: 20px;
  border: 1px solid #ccc;
}