Step 15 how to start and about main element

Tell us what’s happening:
Describe your issue in detail here.

  **i still stuck step 15 how to start**
<html>
<body>
  <h1>CatPhotoApp</h1>
  <main>
    <h2>Cat Photos</h2>
    <!-- TODO: Add link to cat photos -->
    <p>Click here to view more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a>.</p>
    <a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
  </main>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Challenge: Step 15

Link to the challenge:

Hi, so think of it as if you were reading an article, the body is everything, title, headings, etc. The main is everything in between, the content. It’s the “meat” perse, of the article. Sections allow the programmer and reader to distinguish where each of the headings begin and end, and therefore giving pause.