<!DOCTYPE html>
<html>
   <head>
      <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>
   </head>
   <body>
      <h2>Nested Columns</h2>
      <div class = "row">
         <div class="col-sm-9" style="background-color:orange;">
            Column1
            <div class="row">
               <div class="col-sm-6" style="background-color:orange; color:white;">nested column</div>
               <div class="col-sm-6" style="background-color:orange; color:white;">nested column</div>
            </div>
         </div>
         <div class="col-sm-3" style="background-color:red;">Column2</div>
      </div>
   </body>
</html>