Show Output
<!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"> <title>Example of Bootstrap 3 Button Groups Height Sizing</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style type="text/css"> .bs-example{ margin: 20px; } </style> </head> <body> <div class="bs-example"> <div class="btn-toolbar"> <div class="btn-group btn-group-lg"> <button type="button" class="btn btn-primary">Left</button> <button type="button" class="btn btn-primary">Middle</button> <button type="button" class="btn btn-primary">Right</button> </div> </div> <br> <div class="btn-toolbar"> <div class="btn-group"> <button type="button" class="btn btn-primary">Left</button> <button type="button" class="btn btn-primary">Middle</button> <button type="button" class="btn btn-primary">Right</button> </div> </div> <br> <div class="btn-toolbar"> <div class="btn-group btn-group-sm"> <button type="button" class="btn btn-primary">Left</button> <button type="button" class="btn btn-primary">Middle</button> <button type="button" class="btn btn-primary">Right</button> </div> </div> <br> <div class="btn-toolbar"> <div class="btn-group btn-group-xs"> <button type="button" class="btn btn-primary">Left</button> <button type="button" class="btn btn-primary">Middle</button> <button type="button" class="btn btn-primary">Right</button> </div> </div> </div> </body> </html>