<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <p>I'm a</p> <div class="aaa"> <b> <span1>web developer </span1> <br /> <span1> css cowboy </span1><br /> <span1>web developer </span1> <br /> <span1> css cowboy </span1><br /> <span1>web developer </span1> <br /> <span1> css cowboy </span1><br /> </b> </div>

body { padding: 2em 5em; font: normal 40px/50px Arial, sans-serif; color: #999; } p { height: 50px; float: left; margin-right: 0.3em; } b { float: left; overflow: hidden; position: relative; height: 50px; } span1 { display: inline-block; color: #e74c3c; position: relative; white-space: nowrap; top: 0; left: 0; -webkit-animation: move 5s; -webkit-animation-iteration-count: infinite; -webkit-animation-delay: 1s; } @keyframes move { 0% { top: 0px; } 20% { top: -10px; } 40% { top: -50px; } 60% { top: -150px; } 80% { top: -200px; } }