코드:
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<!DOCTYPE html> <html lang="ko"> <head> <meta charset="UTF-8"> <title>HTML colgroup tag</title> <style> table, th, td { border: 1px solid black; } </style> </head> <body> <table> <colgroup span="2" style="background-color: lightpink"></colgroup> <tr> <th>학번</th> <th>이름</th> <th>학과</th> </tr> <tr> <td>2006123456</td> <td>홍길동</td> <td>전자공학과</td> </tr> <tr> <td>2007123789</td> <td>백두산</td> <td>일어일문과</td> </tr> </table> </body> </html>