Feat/navigation content

[EmmaDawsonDev]

Describe your changes

Added navigation page

Screenshots - If Any (Optional)

Link to issue

Closes #

Checklist before requesting a review

• I have performed a self-review of my code.
• Followed the repository's Contributing Guidelines.
• I ran the app and tested it locally to verify that it works as expected.
• I have checked my code with an automatic accessibility tool such as Axe Dev Tools or Wave
  and it shows no errors.

Additional Information (Optional)

Any additional information that you want to give us.