- Bootstrap contains 12 grids.
- md for medium sized devices (Works for most of the devices)
- lg for large devices.
- sm for small devices.
- xs for extra small devices.
Example :
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container-fluid">
<!-- md support most of the desktops -->
<div class="row">
<div class="col-md-6" style="background-color: lightblue;">Hello</div>
<div class="col-md-2" style="background-color: lightgreen;">World</div>
<div class="col-md-4" style="background-color: orange;">World</div>
</div>
<!-- xs for extra small devices -->
<div class="row">
<div class="col-xs-6" style="background-color: lightblue;">Hello</div>
<div class="col-xs-2" style="background-color: lightgreen;">World</div>
<div class="col-xs-4" style="background-color: orange;">World</div>
</div>
<!-- sm for small devices -->
<div class="row">
<div class="col-sm-6" style="background-color: lightblue;">Hello</div>
<div class="col-sm-2" style="background-color: lightgreen;">World</div>
<div class="col-sm-4" style="background-color: orange;">World</div>
</div>
<!-- lg for large devices -->
<div class="row">
<div class="col-lg-6" style="background-color: lightblue;">Hello</div>
<div class="col-lg-2" style="background-color: lightgreen;">World</div>
<div class="col-lg-4" style="background-color: orange;">World</div>
</div>
</div>
</body>
</html>
Output :
