RWD - Fluid 100% Height Website and App Design Example - GREAT EXAMPLE - BS3 Twitter Bootstrap 100% Height DIV

All outer containers (Including) html and body must be height 100%

by bizamajig

HTML

<link rel="stylesheet" href="http://bizamajig.com/bootstrap.css">
<script src="http://bizamajig.com/bootstrap.js"></script>
<div class="container">
    <div class="span5 fill">
    Hello World
    </div>
</div>

CSS

html,body{width: 100%;height:100%;}

.container {
    height:100%;
}

.fill{
    padding: 10px;
    width:100%;
    height:100%;
    min-height:100%;
    background-color:#990000;
    color:#efefef;
}