I am not able to complete step6, would you please help me to complete this?

Tell us what’s happening:

   **Your code so far**
<html>
 <body>
   <h1>CatPhotoApp</h1>
   <main> 
 <h2> Cat Photos</h2>
   <ul>
      <li> Child element 1</li>
      <li> Child element 2</li>
   </ul>
<!-- TODO: Add link to cat photos
<ul>
      <li> Child element 1</li>
      <li> Child element 2</li>
   </ul> --> 
<p> Click here to view more cat photos
 <ul>
      <li> Child element 1</li>
      <li> Child element 2</li>
   </ul>
</p>
</ul>   
   </main>
 </body>
</html>
   **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Challenge: Step 6

Link to the challenge:

You don’t want to add any code to this step. The HTML in the instructions is just an example of how indenting works. I would restart the step to get a fresh start and all the formatting back into place.

The only thing you should do is "Add two spaces in front of the three child elements of main". Can you let us know what part of that you are having trouble with?