Apply the Default Bootstrap Button Style124

Tell us what’s happening:
i cant get both classes working at the same time.

Your code so far

<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" class = "btn" ></button>

                <button class = "btn-default" class = "btn" ></button>

                <button class = "btn-default" class = "btn`" ></button>



      </div>
    </div>
    <div class="col-xs-6">
      <div class="well">
                 <button class = "btn-default" class = "btn" ></button>


               <button class = "btn-default" class = "btn" ></button>

               <button class = "btn-default" class = "btn" ></button>

      </div>
    </div>
  </div>
</div>

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36.

Link to the challenge:
https://www.freecodecamp.org/challenges/apply-the-default-bootstrap-button-style

Normally, you’d write:

<button class="btn btn-default">

when you’re applying two classes to the same element.