My bootsrap was working just fine but suddenly just stopped working. I have tried the online link and downloaded source file but still not working.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Bootstrap demo</title>
<link href="HALOGENCSS.css" rel="stylesheet"/>
<link href="css/bootstrap.min.css" rel="stylesheet"/>
<script src="js/bootstrap.bundle.js"></script>
</head>
<body>
<div class="container-flex">
<div class="row">
<div class="col-xs-6">
<img src="log.JPG" alt="logo" id="logo" style="width: 120px; height: 120px;"/>
</div>
<div class="col-xs-6">
<img src="dropdown.png" alt="dropdown button" id="dropdown" style="width: 30px; height: 30px;"/>
</div>
</div>
</div>
</body>
</html>