Learn HTML by Building a Cat Photo App - Step 1

this is my first time

code error

  **Your code so far**
<html>
<body>
  <catphotoApp>. <CatphotoApp>
</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/15.3 Safari/605.1.15

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

Link to the challenge:

You didn’t have to modify the element