Learn HTML by Building a Cat Photo App - Step 2

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

Why when i test to see if my code is wrong and it keeps saying it is. What am I doing wrong why isnt it working?

  **Your code so far**
<html>
<elementName><h1>CatPhotoApp</h1>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (X11; CrOS x86_64 14816.131.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Challenge: Learn HTML by Building a Cat Photo App - Step 2

Link to the challenge:

What is this supposed to be as it pertains to the instructions?

Also, where is the h2 element the instructions ask you to add?