<div style="display:flex; justify-content:center;">
<table style="width:100%; margin:20px;">
<thead>
<tr>
<th>日</th>
<th>月</th>
<th>火</th>
<th>水</th>
<th>木</th>
<th>金</th>
<th>土</th>
</tr>
</thead>
<tbody>
<tr>
<td> </td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>13</td>
</tr>
<tr>
<td>14</td>
<td>15</td>
<td>16</td>
<td>17</td>
<td>18</td>
<td>19</td>
<td>20</td>
</tr>
<tr>
<td>21</td>
<td>22</td>
<td>23</td>
<td>24</td>
<td>25</td>
<td>26</td>
<td>27</td>
</tr>
<tr>
<td>28</td>
<td>29</td>
<td>30</td>
<td>31</td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table>
</div>thead th{
border:1px solid black;
border-radius:0.5rem;
}
tbody td{
text-align:center;
}
tbody tr{
border-bottom:1px solid black;
}
External CSS
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External JavaScript
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