Bottom-most link on the left-hand side.

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For future reference you can view the different sections of site rules at these three locations:
https://www.steamgifts.com/about/faq
https://www.steamgifts.com/about/guidelines
and at the bottom of https://www.steamgifts.com/roles/member

(Note that you won't be able to see this post anymore once you delete this giveaway.)