Bootstrap - Use Responsive Design with Bootstrap Fluid Containers

Tell us what’s happening:
Describe your issue in detail here.
how do i nest all html elements in fluid containers? i have the other two objectives checked off

  **Your code so far**
<div class="container-fluid">
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
  color: red;
}

h2 {
  font-family: Lobster, Monospace;
}

p {
  font-size: 16px;
  font-family: Monospace;
}

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

.smaller-image {
  width: 100px;
}
</style>
<class=.container-fluid>
<h2 class="red-text">CatPhotoApp</h2>
<class=.container-fluid>
<p>Click here for <a href="#">cat photos</a>.</p>
<class=.container-fluid>
<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
<class=.container-fluid>
<p>Things cats love:</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>
<class=.container-fluid>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<class=.container-fluid>
<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/104.0.5112.102 Safari/537.36 Edg/104.0.1293.70

Challenge: Bootstrap - Use Responsive Design with Bootstrap Fluid Containers

Link to the challenge:

this is not how you assign a class to an element, remember that from the basic html lessons!