<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 id="fullscreen_bg" class="fullscreen_bg"/>
<div class="container">
<form class="form-signin">
<h1 class="form-signin-heading text-muted">Sign In</h1>
<input type="text" class="form-control" placeholder="Email address" required="" autofocus="">
<input type="password" class="form-control" placeholder="Password" required="">
<button class="btn btn-lg btn-primary btn-block" type="submit">
Sign In
</button>
</form>
</div>