[WIP] Fix accessibility issue with page content landmarks

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Accessibility issue: All page content should be contained by landmarks on /</issue_title>
<issue_description>## What
An accessibility scan flagged the element <section> on https://ox.ca because all page content should be contained by landmarks. Learn more about why this was flagged by visiting https://dequeuniversity.com/rules/axe/4.11/region?application=playwright.

To fix this, ensure all page content is contained by landmarks.

Specifically:

Fix any of the following:

• Some page content is not contained by landmarks

Acceptance Criteria

• The specific axe violation reported in this issue is no longer reproducible.
• The fix MUST meet WCAG 2.1 guidelines OR the accessibility standards specified by the repository or organization.
• A test SHOULD be added to ensure this specific axe violation does not regress.
• This PR MUST NOT introduce any new accessibility issues or regressions.

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Accessibility issue: All page content should be contained by landmarks on / #8

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.