Use a CSS Class to Style an Element i need help with ccs class style 2018

Tell us what’s happening:

i dont now how to do
Your h2 element should be red.
Your h2 element should have the class red-text.
Your stylesheet should declare a red-text class and have its color set to red.
Do not use inline style declarations like style=“color: red” in your h2 element.

Your code so far

 h2 .red-text {

    color: red;
 h2  {
    color: red;

<h2 class="Red-text">CatPhotoApp</h2>
  <p>Click here to view more <a href="#">cat photos</a>.</p>
  <a href="#"><img src="" alt="A cute orange cat lying on its back."></a>
    <p>Things cats love:</p>
      <li>cat nip</li>
      <li>laser pointers</li>
    <p>Top 3 things cats hate:</p>
      <li>flea treatment</li>
      <li>other cats</li>
  <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>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36.

Link to the challenge:

Class names are case-sensitive, so Red-text is different from red-text. For this exercise you’ll use red-text.

The selector here should just be .red-text