Refactor/styling final pass

[tenthwalker]

Description

Final passthrough for FitLit part 1 to clean up CSS/HTML to match final rubric specifications and final design adjustments to match all data sets applied by the DOM update functions.

Contributors

@tenthwalker @BrendanTurner1 @ericahagle @butlertree

Checklist

• [x] My PR has an appropriately descriptive and concise title.
• [x] My PR denotes any/all team members who contributed to it.
• [x] My code follows the Turing Style Guides and best practices.
• [x] I ran the code locally and verified that there are no visible errors.
• [x] refactor: My PR clearly describes what code I'm refactoring and why.

[butlertree]

Very nice work on all of the clean up! It came together very well.