CSS background not working (Using Bootstrap) - html

Question

Im new to coding/deving websites and im facing an issue on this project im working on. I can't get the background via CSS to show no matter what i do. Can someone take a look at my code and see if im doing something wrong? Thanks.
http://jsfiddle.net/bkeu8nrf/
<div class="container">
<header class="row"> <!-- Row 1 -->
<div class="col-md-12" id="logo">
<img class="center-block" src="images/logo.jpg" alt="">
</div>
</header> <!-- /Row 1 -->
<nav class="navbar navbar-default navbar-inverse"> <!-- Navbar -->
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapse" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle Navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<!-- Brand -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> <!-- Links -->
<ul class="nav navbar-nav">
<li class="active">Home<span class="sr-only">(Current)</span></li>
<li>Nosotros</li>
<li class="dropdown"> <!-- Dropdown -->
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button"
aria-expanded="false">Ministerios<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
<li>Ministerio 1</li>
<li>Ministerio 2</li>
<li>Ministerio 3</li>
<li>Ministerio 4</li>
<li>Ministerio 5</li>
</ul>
</li> <!-- /Dropdown -->
<li>Servicios</li>
<li>Miembros</li>
<li>Contacto</li>
</ul>
</div> <!-- /Navbar Collapse -->
</div> <!-- /Navbar Header -->
</div> <!-- /Container-fluid -->
</nav> <!-- /Navbar -->
<div id="the-slider" class="carousel slide center-block" data-ride="carousel"> <!-- Carousel -->
<ol class="carousel-indicators">
<li data-target="#the-slider" data-slide-to="0" class="active"></li>
<li data-target="#the-slider" data-slide-to="1"></li>
<li data-target="#the-slider" data-slide-to="2"></li>
</ol>
<div class="carousel-inner"> <!-- Carousel Inner -->
<div class="item active">
<img src="images/banner1.jpg" alt="" class="img-responsive">
</div>
<div class="item">
<img src="images/banner2.jpg" alt="" class="img-responsive">
</div>
<div class="item">
<img src="images/banner3.jpg" alt="" class="img-responsive">
</div>
</div> <!-- /Carousel Inner -->
<!-- Carousel Controls -->
<a class="left carousel-control" href="#the-slider" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a class="right carousel-control" href="#the-slider" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
</a>
<!-- /Carousel Controls -->
</div> <!-- /Carousel -->
<div class="row" id="row2"> <!-- Row 2 -->
<div class="col-md-6 well" id="secondarybanner">
<img src="http://placehold.it/560x300" alt="">
</div>
<div class="col-md-6">
<div> <!-- Twitter Widget -->
<a class="twitter-timeline" href="https://twitter.com/IglCristiana" data-widget-id="404001509135753216">Tweets by #IglCristiana</a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
</div> <!-- /Twitter Widget -->
<div>
<img src="http://placehold.it/60x60" alt="">
<img src="http://placehold.it/60x60" alt="">
<img src="http://placehold.it/60x60" alt="">
</div>
</div>
</div> <!-- /Row 2 -->
<div class="row" id="row3"> <!-- Row 3 -->
<div class="col-md-3 well" id="images">
<img src="http://placehold.it/270x270" alt="">
<p>
Lorem ipsum dolor sit amet, consectetur adipisicing elit.
</p>
</div>
<div class="col-md-3 well" id="images"> <img src="http://placehold.it/270x270" alt=""> </div>
<div class="col-md-3 well" id="images"> <img src="http://placehold.it/270x270" alt=""> </div>
<div class="col-md-3 well" id="images"> <img src="http://placehold.it/270x270" alt=""> </div>
</div> <!-- /Row 3 -->
<footer class="row"> <!-- Row 4 -->
<div class="pull-right" id="footer">
Contacto
<a id="row4" href="#">Contacto</a>
<a id="row4" href="#">Contacto</a>
</div>
<div class="pull-left" id="footer">
<p>Copyright 2015</p>
</div>
<div class="text-center" id="footerlower">
<p>Iglesia Cristiana 2015</p>
</div>
</footer> <!-- /Row 4 -->
</div> <!-- /Container -->
<!-- javascript -->
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="js/bootstrap.min.js"></script>

Answer 1

Set .fullbg class to <body>, remove it from <html> tag
CSS
body.fullbg {
background: url('../images/bg2.jpg') no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
-o-background-size: cover;
}
DEMO HERE