I am trying to work on a new project using Twitter's Bootstrap framework, but I am having an issue. I want a full body background, yet the background seems to be limited to the height of the container div. here is the HTML/CSS code:

<!doctype html>
<html lang="en">
    <head>
        <meta charset='UTF-8'>
        <meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1'>
        <link rel="stylesheet" href="http://twitter.github.com/bootstrap/1.3.0/bootstrap.min.css">
        <title>Bootstrap Issue</title>
        <style>
          body { background: black; }
          .container { background: white; }
        </style>
    </head>
    <body>
        <div class="container">
          <h1> Hello, World!</h1>
        </div>
    </body>

</html>

How can I get the body to take up the entire screen?

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