•<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<link rel="stylesheet" href="http://beyamooz.com/try_it_yourself/bootstrap/bootstrap-rtl.min_.css">
</head>
<body>
<div class="container">
<h2>دکمه</h2>
<p>کلاس btn-danger یک عمل خطرناک را مشخص می کند</p>
<button type="button" class="btn btn-danger">خطر</button>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</body>
</html>
