fix: CTA should have tinted background

[jjagielka]

📑 Description

Fine tuning of the CTA element on the home page:

• tinted background - in accordance with Figma design
• small rearrangement of supporting files

Status

• Not Completed
• Completed

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• I have checked the page with https://validator.unl.edu/
• All the tests have passed
• My pull request is based on the latest commit (not the npm version).

ℹ Additional Information

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Name	Status	Preview	Comments	Updated (UTC)
flowbite-svelte	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 29, 2023 5:00am
flowbite-svelte-update	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 29, 2023 5:00am