For this challenge you dont need to add the <ul>, it was just an example.
What you need to do is to indent (adding two spaces at the beginning of the line) whichever is inside the <main> ... </main>.
When we nest an element inside another element, we add space before the child elements and they give you the <ul> and <li> as an example
The <li> elements are children of the <ul>, so we add 2 spaces before the <li>.
GOOD CODE
<ul>
<li> Child Element 1 </li>
<li> Child Element 2 </li>
</ul>
BAD CODE
<ul>
<li> Child Element 1 </li>
<li> Child Element 2 </li>
</ul>