Reply To: How to change the color above footer?

Hi I have three more questions:
1. I noticed all the product titles in the collection or product list are default set as H2 heading attributes, I prefer them to be text or H5 for SEO purposes.
2. On the checkout page, the apply discount code section has a very bright background, can I change the color of the background? if I can, how？ （refer to the image I’ve submitted)
3. On the checkout page, it’s default that the ship to a different address is hooked, I want the section to be closed by default, is that possible? Thanks( refer to the image-2 I’ve submitted)

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