<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Active / Disabled Dropdown Menu Items Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<style>
.bcontent { margin-top: 10px;
}
</style>
</head>
<body>
<div class="container bcontent">
<h2>Bootstrap Active / Disable Dropdown Menu Items</h2>
<div class="btn-group">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
Tutorials
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">MySQL</a>
<a class="dropdown-item active" href="#">SQL Server</a>
<a class="dropdown-item" href="#">SQLite</a>
<a class="dropdown-item disabled" href="#">Java</a>
<a class="dropdown-item disabled" href="#">.NET</a>
<a class="dropdown-item" href="#">Python</a>
</div>
</div>
</div>
</body>
</html>
