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How to change the size of the input groups in Bootstrap?

Answer»

The input group size can be easily changed in Bootstrap, using the .input-group-lg and input-group-sm, classes.

Here, the .input-group-lg is used for large input groups. The .input-group-sm is used for small input groups.

The following is an example that displays how to change the size of the input groups in Bootstrap:

<!DOCTYPE html> <html lang="en"> <head>   <title>Bootstrap Input Group Size</title>   <meta charset="utf-8">   <meta name="viewport" content="width=device-width, initial-scale=1">   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">   <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>   <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script> </head> <body> <div CLASS="CONTAINER mt-3">   <h2>Input Group Size</h2>   <form>     <div class="input-group mb-3 input-group-sm">       <div class="input-group-prepend">         <span class="input-group-text">Small</span>       </div>       <input TYPE="NUMBER" class="form-control">     </div>   </form>   <form>     <div class="input-group mb-3 input-group-lg">       <div class="input-group-prepend">         <span class="input-group-text">Large</span>       </div>       <input type="number" class="form-control">     </div>   </form> </div> </body> </html>

The output display different sizes of inputs:



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