FI-1980: Refactor selection components

[AlyssaWang]

Summary

Separated selection components from pages and cleaned up page styles as a precursor to updating page layouts

Testing Guidance

Layout should work for all views (web, small web, mobile) and selections should work as normal.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +21.02 🎉

Comparison is base (ca2b7e4) 73.44% compared to head (8bd7299) 94.46%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #361       +/-   ##
===========================================
+ Coverage   73.44%   94.46%   +21.02%     
===========================================
  Files         198      116       -82     
  Lines        9729     3090     -6639     
  Branches      815      377      -438     
===========================================
- Hits         7145     2919     -4226     
+ Misses       2153      171     -1982     
+ Partials      431        0      -431     

Flag	Coverage Δ
backend	94.46% <ø> (ø)
frontend	?

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see 82 files with indirect coverage changes

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[tstrass]

This looks good to me. Just one minor thing I noticed and the branch needs to be brought up to date. Also looks like it's failing codecov.

[arscan]

👍 the slight tweaks to padding and grey colors look good!