bootstrap 4 table border

Example

<table class="table table-bordered">
	<thead>
	<tr>
		<th>ID</th>
		<th>Num</th>
	</tr>
	</thead>
	<tbody>
	<tr>
		<td>1</td>
		<td>300</td>
	</tr>
	<tr>
		<td>2</td>
		<td>400</td>
	</tr>
	</tbody>
</table>

Result: