<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../../maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="../../ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script>
<script src="../../maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Button</h2>
<p>The .btn-primary class provides extra visual weight and identifies the primary action in a set of buttons:</p>
<button type="button" class="btn btn-primary">Primary</button>
</div>
</body>
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</html>