Please help, having issues with this challenge: Basic CSS: Give a Background Color to a div Element

Hello all,
I can’t get the silver background to appear, and complete this challenge. Any ideas? Code is below, thanks.

<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">

<style>

  .silver-background

      {silver-background: silver;}

  

  .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>

<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://bit.ly/fcc-relaxing-cat" 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="/submit-cat-photo">

    <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>

  </form>

</main>

This is not how you set the background-color

.silver-background {
  silver-background: silver;
}

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

Note: Backticks are not single quotes.

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Please link to the challenge when asking for help.

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Got it, thanks for the assist.