H2 css selector issue?

1 
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">

<style>

  .red-text {

    color: red;

  }

  p {

    font-size: 16px;

    font-family: monospace;

  }

  h2 {

    font-family : Lobster;

  }

</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 src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <div>

    <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>
2

whit just your code we have no way to know what challenge you are doing, what issue you are having

when you ask for help please provide some context