mayura.css and related fixes

[helms-charity]

• removed old CSS from mayura.css
• used the partials for section and multisection options in the json
• updated some fields with more clarifying text in the section and multisection json
• other css fixes as needed when I compared the page to the live one.

Fix #570
Test URLs:

• Before: https://main--idfc--aemsites.aem.page/credit-card/metal-credit-card/mayura
• After: https://570-mayuracss--idfc--aemsites.aem.page/credit-card/metal-credit-card/mayura

[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.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run PSI checks
• Re-sync branch

Commits

• 35cb901 ✅ (latest)
• 8868f45 ✅
• c1f0816 ✅
• 7e27a57 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/credit-card/metal-credit-card/mayura
🖥️	/credit-card/metal-credit-card/mayura