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Learning to describe problems is hard, but it is an important part of learning how to code.
Also, the more you say, the more we can help!
I would reset the step to get the original HTML back.
You don’t want to change anything that is already there. You only want to add a new h2 element below the existing h1 element. Adding an h2 element is just like adding an h1 element. You add the opening and closing h2 tags and then put the text for the element between those tags.