Can someone tell me where my mistake is?

HTML-CSS
1

Tell us what’s happening:

Your code so far


<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
h2 {
  font-family: Lobster, Monospace;
}

.thick-green-border {
  border-color: green;
  border-width: 10px;
  border-style: solid;
  border-radius: 50%;
}
</style>

<div class="container-fluid">
<div class="row">
  <div class="col-xs-8">
    <h2 class="text-primary text-center">CatPhotoApp</h2>
  </div>
  <div class="col-xs-4">
    <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
  </div>
</div>
<img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
<div class="row">
  <div class="col-xs-4">
    <button class="btn btn-block btn-primary"><i class="fas fa-thumbs-up"></i> Like</button>
  </div>
  <div class="col-xs-4">
    <button class="btn btn-block btn-info"><i class="fa fa-info-circle"></i>Info</button>
  </div>
  <div class="col-xs-4">
    <button class="btn btn-block btn-danger"><i class="fa fa-trash"></i>Delete</button>
  </div>
</div>
<p>Things cats <span class="text-danger">love:</span></p>
<ul>
  <li>cat nip</li>
  <li>laser pointers</li>
  <li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
  <li>flea treatment</li>
  <li>thunder</li>
  <li>other cats</li>
</ol>
<form action="https://freecatphotoapp.com/submit-cat-photo">
  <label><input type="radio" name="indoor-outdoor"> Indoor</label>
  <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
  <label><input type="checkbox" name="personality"> Loving</label>
  <label><input type="checkbox" name="personality"> Lazy</label>
  <label><input type="checkbox" name="personality"> Crazy</label>
  <input type="text" placeholder="cat photo URL" required>
  <button type="submit">Submit</button>
</form>
</div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36.

Challenge: Add Font Awesome Icons to all of our Buttons

Link to the challenge:

2

Look at one of the requirements:

You should add a <i class="fas fa-info-circle"></i> within your info button element.

Then, look at what you have:

<i class="fa fa-info-circle"></i>