<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.1.0/css/all.css" integrity="sha384-lKuwvrZot6UHsBSfcMvOkWwlCMgc0TaWr+30HWe3a4ltaBwTZhyTEggF5tJv8tbt" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<button type="button" class="btn btn-sm btn-labeled btn"><i class="fa fa-angle-right"></i> btn</button>
<button type="button" class="btn btn-sm btn-labeled btn-default"><i class="fa fa-angle-right"></i> btn-default</button>
<button type="button" class="btn btn-sm btn-labeled btn-primary"><i class="fa fa-home"></i> btn-primary</button>
<button type="button" class="btn btn-sm btn-labeled btn-success" id="index.php"><i class="fa fa-check"></i> btn-success</button>
<button type="button" class="btn btn-sm btn-labeled btn-info"><i class="fa fa-angle-right"></i> btn-info</button>
<button type="button" class="btn btn-sm btn-labeled btn-warning" id="index.php"><i class="fa fa-warning"></i> btn-warning</button>
<button type="button" class="btn btn-sm btn-labeled btn-danger" id="index.php"><i class="fas fa-skull"></i> btn-danger</button>
<button type="button" class="btn btn-sm btn-labeled btn-link"><i class="fa fa-angle-right"></i> btn-link</button>
