Use an id Attribute to Style an Element HTML CSS

Tell us what’s happening:
This is my problem “Your form element should have the background-color of green.”

  **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;
}

.silver-background {
  background-color: silver;
}
</style>

<h2 class="red-text">CatPhotoApp</h2>
<main>
<p class="red-text">Click here to view more <a href="#">cat photos</a>.</p>

<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>

<div class="silver-background">
  <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>
</div>

<form action="https://freecatphotoapp.com/submit-cat-photo" id="cat-photo-form">
  <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
  <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
  <label><input type="checkbox" name="personality" checked> Loving</label>
  <label><input type="checkbox" name="personality"> Lazy</label>
  <label><input type="checkbox" name="personality"> Energetic</label><br>
  <input type="text" placeholder="cat photo URL" required>
  <button type="submit">Submit</button>
#cat-photo-form {
background-color: green;
}
</form>
</main>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Linux; Android 10; TECNO BC2c) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.73 Mobile Safari/537.36

Challenge: Use an id Attribute to Style an Element

Link to the challenge:

THIS TUTORIAL ASKS US TO:
Try giving your form, which now has the id attribute of cat-photo-form , a green background.


THIS TUTORIAL IS HERE TO TEACH US HOW TO USE AN `#ID` INSTEAD OF A `.CLASS`:

Notice in this first Image how it says :
Screenshot 2022-03-31 5.03.39 PM

ID = "cat-photo-form"

Instead of

CLASS = "cat-photo-form"


When we use an #ID, instead of using a period, we use a # in front of the CSS selectors

instead of:

.cat-photo-form

we use

#cat-photo-form

Screenshot 2022-03-31 5.05.23 PM

THEN, THE TUTORIAL ASKS US TO : add a green background to the id attribute of cat-photo-form.

Which should be placed above the closing </style> tag