Container fluid confusion

Tell us what’s happening:
I have read through all the comments, and i am still lost on this container-fluid coding. I feel like I need to be walked through this step by step. any advice?

Your code so far

<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>

<h2 class="red-text">CatPhotoApp</h2>

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

<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" 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="/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:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36.

Link to the challenge:
https://www.freecodecamp.org/challenges/use-responsive-design-with-bootstrap-fluid-containers

The challenge instructions state:

To get started, we should nest all of our HTML in a div element with the class container-fluid.

What part of the instructions do you not understand?

Do you know how to create a div element? If no, then review the following challenge.
https://www.freecodecamp.org/challenges/nest-many-elements-within-a-single-div-element

Do you know how to add a class to an element? If no, then review the following challenge.
https://www.freecodecamp.org/challenges/use-a-css-class-to-style-an-element

Do you know how to nest something in a div element? If no, then review the following challenge.
https://www.freecodecamp.org/challenges/nest-many-elements-within-a-single-div-element

It’s asking you to nest (wrap) your code in a div. so start with that first.

div
    Code here
div

Then it’s asking you to add a class name to that div.

See if that helps at all.