I'm trying for an icon bootstrap, but I'm not getting it ..
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="css/xd.css">
<link rel="stylesheet" href="css/cardslider.css">
<link href="css/bootstrap.min.css" rel="stylesheet">
</head>
<div class="container">
<div class="row " id="lul">
<div class="col-12 d-flex">
<span class="glyphicon glyphicon-star">x</span>
<h3 class="mr-auto mt-3">Novidades</h3>
<a class="btn btn-outline-secondary prev mt-3 mb-3" href="" title="go back"><i class="fa fa-lg fa-chevron-left"></i></a>
<a class="btn btn-outline-secondary next mt-3 mb-3" href="" title="more"><i class="fa fa-lg fa-chevron-right"></i></a>
</div>
</div>
</div>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.2.0/css/all.css" integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">
<script src="js/popper.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script>
I imported into css
@import url(http://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css);