Untitled

<!DOCTYPE html>
<!--[if lt IE 7]><html class="lt-ie9 lt-ie8 lt-ie7" lang="en"><![endif]-->
<!--[if IE 7]><html class="lt-ie9 lt-ie8" lang="en"><![endif]-->
<!--[if IE 8]><html class="lt-ie9" lang="en"><![endif]-->
<!--[if gt IE 8]><!--><html lang="en"><!--<![endif]-->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Box</title>
<style>

  html, body {
    margin: 0;
    padding: 0;
    height: 100%;
  }

  .box {
    min-height: 100%;
  }

  .lt-ie7 .box {
    height: 100%;
  }

</style>
</head>
<body>
  <div id="container" class='box' style="background-color: green"></div>
</body>
</html>