<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> <!------ Include the above in your HEAD tag ----------> <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>

.btn i {margin:-12px 0px -12px -11px;display: inline-block;padding: 9px 9px; background: rgba(0,0,0,0.15);border-radius: 3px 0 0 3px;}