<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="timeline-wrapper">
<div class="timeline-item">
<div class="animated-background facebook">
<div class="background-masker header-top"></div>
<div class="background-masker header-left"></div>
<div class="background-masker header-right"></div>
<div class="background-masker header-bottom"></div>
<div class="background-masker subheader-left"></div>
<div class="background-masker subheader-right"></div>
<div class="background-masker subheader-bottom"></div>
<div class="background-masker content-top"></div>
<div class="background-masker content-first-end"></div>
<div class="background-masker content-second-line"></div>
<div class="background-masker content-second-end"></div>
<div class="background-masker content-third-line"></div>
<div class="background-masker content-third-end"></div>
</div>
</div>
</div>