How to page 21

I'm happy to help! However, I need more context to understand what you mean by "page 21". Could you please provide more information or clarify what you are trying to do?

Are you trying to:

1. Turn to page 21 in a book or document?
2. Access page 21 of a website or online content?
3. Create a new page with the number 21 in a document or presentation?
4. Something else entirely?

Please let me know, and I'll do my best to assist you!