fix(nav): make sure nav is on top of the content

[SamVerschueren]

While using TutorialKit, I noticed that the navigation was not always on top of the content.

Before:

After:

[bolt-new-by-stackblitz]

Run & review this pull request in StackBlitz Codeflow.

[changeset-bot]

⚠️ No Changeset found

Latest commit: ed537b1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR