add tailwind css to frontend

[jonrxu]

• Add TailwindCSS to frontend because existing CSS is a big pain to wrangle.
• Will eventually do refactors to uniform Tailwind.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.47%. Comparing base (c24cdc2) to head (db3a287).
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #310      +/-   ##
==========================================
- Coverage   90.51%   90.47%   -0.04%     
==========================================
  Files          62       62              
  Lines        2666     2666              
==========================================
- Hits         2413     2412       -1     
- Misses        253      254       +1     

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[tuneerroy]

YAYAYYA moving to Tailwind!!! brief note on PR titles, try to match the format of the GitHub issue titles. should be concise and title-like. also make sure to squash and merge when you eventually submit this PR!