<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="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row text-center"> <div class = "centered"> <div class = "blob-1"></div> <div class = "blob-2"></div> </div> </div> </div>

html,body{ background:#000; margin:0; } .centered{ width:400px; height:400px; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); background:#000; filter: blur(10px) contrast(20); } .blob-1,.blob-2{ width:70px; height:70px; position:absolute; background:#fff; border-radius:50%; top:50%;left:50%; transform:translate(-50%,-50%); } .blob-1{ left:20%; animation:osc-l 2.5s ease infinite; } .blob-2{ left:80%; animation:osc-r 2.5s ease infinite; background:#0ff; } @keyframes osc-l{ 0%{left:20%;} 50%{left:50%;} 100%{left:20%;} } @keyframes osc-r{ 0%{left:80%;} 50%{left:50%;} 100%{left:80%;} }