<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/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"> <div class="input-group input-group-lg"> <!-- Input --> <input type="text" name"search" class="form-control" placeholder="Search term..."> <!-- Dropdown --> <div class="input-group-btn"> <button type="button" class="btn btn-default" data-toggle="dropdown">Advanced <span class="caret"></span></button> <ul class="dropdown-menu pull-left" role="menu"> <li><a href="#">Option 1</a></li> <li><a href="#">Option 2</a></li> <li><a href="#">Option 3</a></li> <li class="divider"></li> <li><a href="#">Option 4</a></li> </ul> <button class="btn btn-default" type="button"><span class="glyphicon glyphicon-search"></span></button> </span> </div> </div> </div>

body { margin: 20px; } .input-group-btn .dropdown-toggle:not(:last-of-type) { border-radius: 0 !important; }