实现单元格合并
横向合并
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>网页标题</title>
</head>
<body>
<table border="1" cellspacing="0">
<caption>京东商城 - 笔记本电脑清单</caption>
<tr>
<th>品牌</th>
<th>系列</th>
<th>价格</th>
<!-- <th>硬盘容量</th> -->
<!-- <th>内存大小</th> -->
<th colspan="2">硬盘容量和内存大小</th>
</tr>
··· ···
</table>
</body>
</html>
纵向合并
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>网页标题</title>
</head>
<body>
<table border="1" cellspacing="0">
<caption>京东商城 - 笔记本电脑清单</caption>
··· ···
<tr>
<td>惠普</td>
<td>暗影精灵</td>
<td>3999</td>
<td>1T+1T SSD</td>
<!-- <td>32GB</td> -->
</tr>
<tr>
<td>戴尔</td>
<td>灵越</td>
<td>9999</td>
<td>2T+2T SSD</td>
<!-- <td>128GB</td> -->
</tr>
<tr>
<td>华硕</td>
<td>飞行堡垒</td>
<td>3999</td>
<td>1T+1T SSD</td>
<!-- <td>32GB</td> -->
</tr>
</table>
</body>
</html>
