Below codes are used to implementing Accordion tab using Bootstrap 4.1 version.
<html>
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
</head>
<body>
<div class="container">
<div class="accordion" id="accordion">
<div class="card">
<div class="card-header" id="headingOne">
<a class="collapsed card-link" data-toggle="collapse" href="#collapseOne">
Tab #1
</a>
</div>
<div id="collapseOne" class="collapse show" data-parent="#accordion">
<div class="card-body">
Tab 1 Content
</div>
</div>
</div>
<div class="card">
<div class="card-header" id="headingTwo">
<a class="collapsed card-link" data-toggle="collapse" href="#collapseTwo">
Tab #2
</a>
</div>
<div id="collapseTwo" class="collapse" data-parent="#accordion">
<div class="card-body">
Tab 2 Content
</div>
</div>
</div>
<div class="card">
<div class="card-header" id="headingThree">
<a class="collapsed card-link" data-toggle="collapse" href="#collapseThree">
Tab #3
</a>
</div>
<div id="collapseThree" class="collapse" data-parent="#accordion">
<div class="card-body">
Tab 3 Content
</div>
</div>
</div>
</div>
</div>
<!-- Script section -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>