Add backgrounds, styling for section metadata

[tonyklapatch]

Add styling, backgrounds for section metadata.

Fix #37

Test URLs:

• Before: https://main--cigars-for-beginners--famous-smoke.hlx.live/cigars-for-beginners
• After: https://37-section-metadata--cigars-for-beginners--famous-smoke.hlx.page/cigars-for-beginners

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
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Commits

• c100a87 ✅ (latest)
• 6a8e343 ✅
• 5b76897 ✅
• db14d6f ✅
• 64e97a0 ✅
• 6dddc79 ✅

[aem-code-sync]

Page	Scores	Audits	Google
/cigars-for-beginners

[codecodeio]

More generic styles look good. We can remove the remaining section specific styles if we ever do a redesign.