You added the opening <main> tag in the correct place but the closing </main> tag is not quite right. You also deleted the p element that was there. That element is very important because you are supposed to put the closing </main> tag after it.
I would restart the step to get the original HTML back. Don’t change/delete any of the existing HTML. Put the opening <main> tag exactly where you have it now. And then put the closing </main> tag after the entire p element.