🐛 Bug: Heading anchor highlight (:target) cannot be cleared without navigating to another heading

Describe the bug

• Across multiple docs pages on JSON Schema, clicking a heading applies a persistent highlight due to CSS :target styling.

• After clicking a heading (e.g. “Benefits of being a silver sponsor”), the highlight cannot be removed by:

  • Clicking the same heading again
  • Clicking anywhere else on the page
  • Scrolling

• The only way to remove the highlight is to click another heading (changing the URL hash).

• This creates a “stuck highlighted” state and degrades the reading experience.

Steps To Reproduce

1. Open the page above
2. Click on the heading “Benefits of being a silver sponsor”
3. Notice the heading becomes highlighted
4. Try to remove the highlight by clicking elsewhere → it remains
5. Click a different heading → previous highlight disappears

Expected Behavior

The highlight applied by :target should be cleared when:

• Clicking anywhere outside headings, or
• Clicking the same heading again

This is the behavior followed by most documentation sites (e.g. MDN, GitHub Docs).

Screenshots

https://github.com/user-attachments/assets/3ab23b94-c838-499a-92b9-c1678bb2a858

Device Information [optional]

- OS:Ubuntu (Latest)
- Browser:Brave
- version:

Are you working on this issue?

Yes

Do you think this work might require an [Architectural Decision Record (ADR)]? (significant or noteworthy)

No

Reproduce the issue on the affected JSON Schema documentation page, using the “Benefits of being a silver sponsor” heading, then inspect the heading-anchor behavior and CSS :target styling. Done means the highlight is removed when clicking outside headings or clicking the same heading again, while changing to another heading still works.