Button button, who's got the button?

For some reason, I cannot figure this out:

<div class="container-fluid">
  <h3 class="text-primary text-center">jQuery Playground</h3>
  <div class="row">
    <div class="col-xs-6">
      <div class="well">
        <button class="btn-default">
        <button></button>
        <button></button>
        <button></button>
      </div>
    </div>
    <div class="col-xs-6">
      <div class="well">
        <button class="btn-default">
        <button></button>
        <button></button>
        <button></button>
      </div>
    </div>
  </div>
</div>

Apply the btn class to each of your button elements.

Apply the btn-default class to each of your button elements.

  1. Can you find the button elements?
  2. Do you remember how to add a class to an element?
  3. Do you remember how to add more than one class to an element?

what is your actual result, and what is expected, what are you trying to achieve its not clear ?