<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/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 ----------> <div class="container"> <div class="row"> <h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2> </div> </div>

SCSS SYNTAX @mixin corner-icon($name, $top-or-bottom, $left-or-right) { .icon-#{$name} { background-image: url("/icons/#{$name}.svg"); position: absolute; #{$top-or-bottom}: 0; #{$left-or-right}: 0; } } @include corner-icon("mail", top, left); /*Result in CSS*/ .icon-mail { background-image: url("/icons/mail.svg"); position: absolute; top: 0; left: 0; }