<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="a"> <img src="images/banner1.jpg"> <div class="overlay">wde2d2ed2ed32d3w</div> </div>

.a{ position: relative; } .overlay{ background-color: aqua; width: 0; height: 0; position: absolute; z-index: 1; top: 0; border-radius: 50%; } .a:hover .overlay{ -webkit-animation: circle .75s; animation: circle .75s; } @-webkit-keyframes circle { 0% { opacity: 1; } 40% { opacity: 1; } 100% { width: 200%; height: 200%; opacity: 0; } } @keyframes circle { 0% { opacity: 1; } 40% { opacity: 1; } 100% { width: 200%; height: 200%; opacity: 0; } }