Basically, any parent DIV containers should also be 100% - this includes BODY, HTML, etc. You can add CSS after "bootstrap.css" to override Bootstrap CSS as follows:
html,body{height:100%;} .container { height:100%; } .fill{ width:100%; height:100%; min-height:100%; background-color:#990000; padding:10px; color:#efefef; }
http://jsfiddle.net/skelly/zrBGw/
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