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</div> and </main> high light red
When I add the <img src="images/me.png" alt="Drawing of Ambrose Hussain" class="profile-image"> to the code the </div> and the </main> tags highlight red, but the code still works with the image being in the text.
Steven Parker217,443 Points
The red highlight would generally mean an unmatched tag, and since neither <div> or <main> have any effect on the appearance by themselves, you could be missing the opening tags as db30 suggested.
Another possible cause is if the tags were overlapping, as if the ending tag order was not the opposite of the starting tag order.
In any case, if you still have trouble, post your code or a link to you workspace snapshot.