<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
rel="stylesheet">
</head>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.
bundle.min.js"></script>
<body>
<button type="button" class="btn btn-primary">Primary</button>
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<span class="navbar-brand">Navbar</span>
<button class="navbar-toggler" type="button">
<span class="navbar-toggler-icon"></span>
</button>
</div>
</nav>
<ul class="list-group show">
<li class="list-group-item">An item
<li class="list-group-item">A second item
<li class="list-group-item">A third item
<li class="list-group-item">A fourth item
<li class="list-group-item">And a fifth one
</body>
<style>
.list-group {
display: none;
}
.show {
display: block;
}
</style>
<script>
document.getElementsByClassName('.navbar-toggler')
[0].addEventListener('click',function () {
document.querySelectorAll('.list-group')[0].classList.toggle('show');
})
</script>
</html>
