<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/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"> <h2 class="blink">Hello</h2> </div> </div>

body{ background-color: #CCC; margin: 100px; } .blink{ font-size: 240px; color: rgb (0, 137, 226); animation: blink 1s infinite; } @keyframes blink{ 0%{opacity: 1;} 75%{opacity: 1;} 76%{ opacity: 0;} 100%{opacity: 0;} }