<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Bootstrap 5 Collapsible Menu</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
</head>
<body>
<div class="container mt-5">
<div class="row">
<div class="col-lg-12">
<h2>Multilevel Collapsible Menu</h2>
</div>
</div>
<ul class="list-unstyled">
<li class="nav-item">
<a class="nav-link collapsed" href="#" data-bs-toggle="collapse" data-bs-target="#collapseIndustries" aria-expanded="false" aria-controls="collapseIndustries">
Industries
<i class="fas fa-chevron-right ms-1"></i>
</a>
<div id="collapseIndustries" class="collapse">
<ul class="list-unstyled ps-3">
