通过使用.col-md-push- 和.col-md-pull-类就可以很容易的改变列(column)的排序。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="bootStrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-push-6">2</div>
<div class="col-md-6 col-md-pull-6">1</div>
</div>
</div>
</body>
</html>