By default the grid layout system of Bootstrap has 12 columns.
We use the row class to mark the row div container and then use
the col-lg-* to mark each cell.
All * adds up should be equal to 12.
<!DOCTYPE HTML>
<html>
<head>
<link href="http://java2s.com/style/bootstrap.min.css" rel="stylesheet">
<style>div{background:#eee;border:1px solid #DDD;}</style>
<!-- ww w . ja v a 2s.co m-->
</head>
<body style='margin:20px;'>
<div class="row">
<div class="col-lg-8">8</div>
<div class="col-lg-4">4</div>
</div>
</body>
</html>