<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="src/style.css">
</head>
<body>
<div class="d-flex h-100">
<button class="btn btn-warning m-auto">
Bootstrap button
</button>
</div>
<script src="src/script.js"></script>
</body>
</html>