<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Expandable Table Tree</title>
<!-- Include Bootstrap CSS -->
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<h1>Expandable Table Tree</h1>
<div class="table-responsive">
<table class="table table-striped border">
<thead>
<tr>
<th> </th>
<th>Conf Number</th>
<th>Date</th>
<th>C#</th>
<th>Source</th>
<th>Order Amount</th>
<th>Items Not Available</th>
<th>Type</th>
<th>Status</th>
<th>Status Date</th>
</tr>
</thead>
<tbody>
<tr>
<td><a data-toggle="collapse" data-parent="#accordion" href="#expandable1">></a></td>
<td><a class="underline" href="#">451316356</a></td>
<td>02/09/2018</td>
<td>05</td>
<td>INTERNET</td>
<td>NA</td>
<td></td>
<td>AVON</td>
<td>Submitted</td>
<td>02/09/2018</td>
</tr>
<tr>
<td colspan="10" id="expandable1" class="collapse">
<div>
Expandable content 1
</div>
</td>
</tr>
</tbody>
<tbody>
<tr>
<td><a data-toggle="collapse" data-parent="#accordion" href="#expandable2">></a></td>
<td><a class="underline" href="#">451316357</a></td>
<td>02/10/2018</td>
<td>06</td>
<td>ONLINE</td>
<td>$100</td>
<td>2</td>
<td>XYZ</td>
<td>Processed</td>
<td>02/10/2018</td>
</tr>
<tr>
<td colspan="10" id="expandable2" class="collapse">
<div>
Expandable content 2
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
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<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.5.3/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>