<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.1/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <h2>Bootstrap 3 .input-xs, since it doesn't exists.</h2> </div> <P>Sample usage in input-group</P> <div class="input-group"> <span class="input-group-btn"> <button class="btn btn-xs btn-success"> <i class="glyphicon glyphicon-plus"></i> </button> </span> <input type="text" class="form-control input-xs" /> <span class="input-group-btn"> <button class="btn btn-xs btn-danger"> <i class="glyphicon glyphicon-minus"></i> </button> </span> </div> <p>Alternatively:</p> <div class="input-group input-group-xs"> <span class="input-group-btn"> <button class="btn btn-success"> <i class="glyphicon glyphicon-plus"></i> </button> </span> <input type="text" class="form-control" /> <span class="input-group-btn"> <button class="btn btn-danger"> <i class="glyphicon glyphicon-minus"></i> </button> </span> </div> </div>

.input-xs { height: 22px; padding: 5px 5px; font-size: 12px; line-height: 1.5; border-radius: 3px; } /*Alternatively*/ .input-group-xs>.form-control, .input-group-xs>.input-group-addon, .input-group-xs>.input-group-btn>.btn { height: 22px; padding: 1px 5px; font-size: 12px; line-height: 1.5; }