SCSS to CSS: migrate scss to css that could be native css or only uses css nesting

[itsmedavep]

As the description says.

[Short description explaining the high-level reason for the pull request]

Additions

Removals

Changes

Testing

Screenshots

Before	After

Notes and todos

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows the standards laid out in the CFPB development guidelines
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Visually tested in supported browsers and devices (see checklist below 👇)
• Project documentation has been updated
• Reviewers requested with the Reviewers tool ➡️

Testing checklist

Browsers

Check the current browser support cutoff list for browsers that are advisable
to prioritize for testing.

Accessibility

• Keyboard friendly
• Screen reader friendly

Other

• Is useable without CSS
• Is useable without JS
• Flexible from small to large screens
• No linting errors or warnings
• JavaScript tests are passing