Stucked here, solution pls?

Tell us what’s happening:
Describe your issue in detail here.

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

.container-fluid{
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>
<div class= "container-fluid">
<h2 class="red-text">CatPhotoApp</h2>

<p>Click here for <a href="#">cat photos</a>.</p>
</div>


<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>

<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>
<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>
   **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36

Challenge: Use Responsive Design with Bootstrap Fluid Containers

Link to the challenge:

Hint: The challenge wants you to nest all your html element in a div and give it a class of container-fluid like so:

<div class = "I_am_the_container ">
     all html elements will go here
</div>

more explanations pls
I tried doing that but nothing works

Every element below the style tag in your editor should be in the area “all html elements will go here” from the illustration above, from your code you only wrapped the h2 and p element in the container-fluid div. just move the div closing tag to the end of your code.