First of all i'm not sure if this is a class at all which belongs to CSS or whatsoever and i'm also not a native english speaker but i'll try my best.
I'm new to coding and passed this challenge at Freecodecamp but did not understand why i needed to add this class. I found 2 similar questions and also looked the next challenges up , but neither the questions nor the challenges helped me understand the point of adding this class.
The name of the challenge is : Create a Class to Target with jQuery Selectors. Any help is appreciated.

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

```