Learn HTML by Building a Cat Photo App - Step 1

Tell us what’s happening:
Describe your issue in detail here.
I’m doing exactly what the site is asking but it keeps saying that my code is wrong…
Really want to practice coding but if i’m stuck at the beginning it’s ridiculous.
If somebody could help me, it’ll be appreciated.
Thank you in advance,
And i say hello to the whole community, hope you are all doing well !

  **Your code so far**
<html>
<body>
  <h1>Hello World</h1>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15

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

Link to the challenge:

You just need to change the text within <h1></h1> from Hello World to CatPhotoApp for this challenge.