<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> <!------ Include the above in your HEAD tag ----------> box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2); box-shadow: 0 4px 8px 5px rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19); -webkit-box-shadow: 10px 10px 0px 0px rgba(255,0,0,1); -moz-box-shadow: 10px 10px 0px 0px rgba(255,0,0,1); box-shadow: 10px 10px 0px 0px rgba(255,0,0,1);