:::
18. What are tables?(表格)
19. A single column(單欄)
<html>
<head>
<title>Table Time</title>
</head>
<body>
<table border="1px">
<tr>
<td>One</td>
</tr>
<tr>
<td>two</td>
</tr>
<tr>
<td>three</td>
</tr>
</table>
</body>
</html>