Bootstrap 5 Table foot is used to create a section where we can calculate the whole column's sum. Like if we create a table that contains two columns one holding the product and another holding the value then the value part can be summed up.
Bootstrap 5 Table foot Class: We do not require any class for the table foot, in HTML we already have HTML tfoot Tag, which plays the role here.
Syntax:
<table>
<thead>
</thead>
<tbody>
</tbody>
<tfoot>
...
</tfoot>
</table>The below example illustrates the Bootstrap 5 Table foot:
Example 1: In this example, we will create a course table and sum the price of the course.
<!DOCTYPE html>
<html>
<head>
<link href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity=
"sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
</head>
<body class="m-3">
<center>
<h1 class="text-success">
GeeksforGeeks
</h1>
<strong>Bootstrap 5 Tables Foot</strong>
</center>
<table class="table">
<thead>
<tr>
<th scope="col">No</th>
<th scope="col">Course</th>
<th scope="col">Price</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>HTML- Basics</td>
<td>$29</td>
</tr>
<tr>
<th scope="row">2</th>
<td>CSS- Basics</td>
<td>$25</td>
</tr>
</tbody>
<tfoot>
<tr>
<th scope="row">Combo</th>
<td>Web-Development Bundle</td>
<td>$54</td>
</tr>
</tfoot>
</table>
</body>
</html>
Output:

Example 2: In this example, we will use the footer with the dark theme using class .table-dark to calculate the sum of the price of all courses
<!DOCTYPE html>
<html>
<head>
<link href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity=
"sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
</head>
<body class="m-3">
<center>
<h1 class="text-success">
GeeksforGeeks
</h1>
<strong>Bootstrap 5 Tables Foot</strong>
</center>
<table class="table">
<thead>
<tr>
<th scope="col">No</th>
<th scope="col">Course</th>
<th scope="col">Price</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>HTML- Basics</td>
<td>$29</td>
</tr>
<tr>
<th scope="row">2</th>
<td>CSS- Basics</td>
<td>$25</td>
</tr>
<tr>
<th scope="row">3</th>
<td>JS- Basics</td>
<td>$35</td>
</tr>
</tbody>
<tfoot class="table-dark">
<tr>
<th scope="row">Combo</th>
<td>Front-End Developer</td>
<td>$89</td>
</tr>
</tfoot>
</table>
</body>
</html>
Output:

Reference: https://getbootstrap.com/docs/5.0/content/tables/#table-foot