<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<h2>Loading Buttons</h2>
<button class="buttonload">
<i class="fa fa-spinner fa-spin"></i>Loading
</button>
<button class="buttonload">
<i class="fa fa-circle-o-notch fa-spin"></i>Loading
</button>
<button class="buttonload">
<i class="fa fa-refresh fa-spin"></i>Loading
</button>
</body>
</html>
