Learn HTML by Building a Cat Photo App - Step 1

Tell us what’s happening:
Describe your issue in detail here. Completed the instructions as was described and it keeps saying, its wrong.

  **Your code so far**
<html>
<body>
  <CatPhotoApp>Hello World</CatPhotoApp>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.2 Safari/605.1.15

Challenge: Learn HTML by Building a Cat Photo App - Step 1

Link to the challenge:

You replaced h1 with CatPhotoApp. You should not do that. You must keep the h1 and replace the text Hello World

Thank you so much! That worked!