table.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <table border="1">
        <thead>
            <tr>
                <th></th>
                <th>월</th>
                <th>화</th>
                <th>수</th>
                <th>목</th>
                <th>금</th>
              </tr>
        </thead>
        <tbody>
            <tr>
                <td>1교시</td>
                <td>영어</td>
                <td rowspan="2">국어</td>
                <td>과학</td>
                <td>미술</td>
                <td>기술</td>
            </tr>
            <tr>
                <td>2교시</td>
                <td>도덕</td>
                <td colspan="3">체육</td>
            </tr>
        </tbody>
    </table>
</body>
</html>