Bootstrap .dropup class

Menus can also be built to drop up rather than down. To achieve this, simply add .dropup to the parent .btn-group container. 

You can try to run the following code set menus to drop up:


Live Demo

<!DOCTYPE html>
      <title>Bootstrap Example</title>
      <link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
      <script src = "/scripts/jquery.min.js"></script>
      <script src = "/bootstrap/js/bootstrap.min.js"></script>
      <div class = "row" style = "margin-left:50px; margin-top:120px">
         <div class = "btn-group dropup">
            <button type = "button" class = "btn btn-primary dropdown-toggle" data-toggle = "dropdown">
               <span class = "caret"></span>
            <ul class = "dropdown-menu" role = "menu">
               <li><a href = "#">Programming</a></li>
               <li><a href = "#">Web Dev</a></li>
               <li><a href = "#">Database</a></li>
               <li><a href = "#">Networking</a></li>