【table_column】
<!DOCTYPE html>
<html lang="en">
<head>
<title>Example of HTML table column groups</title>
</head>
<body>
<table border="1" cellpadding="10">
<colgroup>
<col style="background: #bed65a;">
<col style="background: #f8d97f;">
</colgroup>
<tr>
<td>row 1, cell 1</td>
<td>row 1, cell 2</td>
</tr>
<tr>
<td>row 2, cell 1</td>
<td>row 2, cell 2</td>
</tr>
</table>
</body>
</html>
