Membuat HTML Table dengan Header bertingkat

table.html

<table>
    <tr>
        <th rowspan="3">No.</th>
        <th rowspan="3">Nomor Induk</th>
        <th rowspan="3">Nama Lengkap</th>
        <th colspan="12">Aspek Penilaian</th>
        <th rowspan="3">NR</th>
    </tr>
    <tr>
        <th colspan="5">Tugas</th>
        <th colspan="5">UH</th>
        <th rowspan="2">UTS</th>
        <th rowspan="2">UAS</th>
    </tr>
    <tr>
        <th>1</th>
        <th>2</th>
        <th>3</th>
        <th>4</th>
        <th>5</th>
        <th>1</th>
        <th>2</th>
        <th>3</th>
        <th>4</th>
        <th>5</th>
    </tr>
    <tr>
        <td>1</td>
        <td>943</td>
        <td>Aditya Rahma</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
    </tr>
    <tr>
        <td>2</td>
        <td>945</td>
        <td>Akhmad Alfin Nadia</td>
        <td>100</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
        <td>100</td>
    </tr>
</table>