Bootstrap Push & Pull

<!DOCTYPE html>
<html>

<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
  <link rel="stylesheet" href="style.css" />
</head>

<body>
  <div class="container-fluid">
    <h1>Push and Pull</h1>
    <div class="row">
      <div class="col-sm-3 col-xs-6">
        <div class="well">Left</div>
      </div>
      <div class="col-sm-3 col-sm-push-6 col-xs-6">
        <div class="well">Right</div>
      </div>
      <div class="col-sm-6 col-sm-pull-3 col-xs-12">
        <div class="well">Main</div>
      </div>
    </div>
  </div>

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  <script src="script.js"></script>
</body>

</html>

// Code goes here

/* Styles go here */