I don't understand

HTML-CSS
1 
<html>
  <body>
    <h1>Hello World</h1>
  </body>
</html>
2

Hi there and welcome!

If you have any questions about specific curriculum challenge. Create a topic to the challenge step using Help button. That button appears below the challenge editor, when you try to submit the wrong code more than three times.

3

Welcome to the forum @Gosayenegash

For step 1 of the Cat Photo App you are asked to update the text content of the h1 element.

I edited your post so the code correctly formats on the forum.

Happy coding