<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>表格学习</title>
</head>
<body>
<!-- 表格table
行 tr rows
列 td
-->
<table border="1px"><tr><!-- colspan 跨列 --><td colspan="4">1-1</td></tr><tr><!-- rowspan 跨行 --><td rowspan="2">2-1</td><td>2-2</td><td>2-3</td><td>2-4</td></tr><tr><td>3-1</td><td>3-2</td><td>3-3</td></tr>
</table>
</body>
</html>
https://www.bilibili.com/video/BV1x4411V75C?p=8
