<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 ----------> <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous"> <div class="container"> <div class="row shrink"> <h2> <span class="hvr-pulse-shrink"><i class="fa fa-anchor" aria-hidden="true"></i></span> </h2> </div> </div>

/* Pulse Shrink */ @-webkit-keyframes hvr-pulse-shrink { to { -webkit-transform: scale(0.9); transform: scale(0.9); } } @keyframes hvr-pulse-shrink { to { -webkit-transform: scale(0.9); transform: scale(0.9); } } .hvr-pulse-shrink { display: inline-block; vertical-align: middle; -webkit-transform: translateZ(0); transform: translateZ(0); box-shadow: 0 0 1px rgba(0, 0, 0, 0); -webkit-backface-visibility: hidden; backface-visibility: hidden; -moz-osx-font-smoothing: grayscale; } .hvr-pulse-shrink:hover, .hvr-pulse-shrink:focus, .hvr-pulse-shrink:active { -webkit-animation-name: hvr-pulse-shrink; animation-name: hvr-pulse-shrink; -webkit-animation-duration: 0.3s; animation-duration: 0.3s; -webkit-animation-timing-function: linear; animation-timing-function: linear; -webkit-animation-iteration-count: infinite; animation-iteration-count: infinite; -webkit-animation-direction: alternate; animation-direction: alternate; }