CSS class, element not turning red

My h2 element isn’t turning red:

Your code so far

<style>
  h2 {
    color: blue;
  }
</style>

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

<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16278.

Link to the challenge:
https://www.freecodecamp.org/challenges/use-a-css-class-to-style-an-element