chore: Make all global selectors apply uniformly

[jkuelz]

Issue #, if available:

Description of changes:
A global class can be one of :root, html, or body. This fix ensures all global selectors are treated the same.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.38%. Comparing base (a168ef5) to head (871e7cb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #122   +/-   ##
=======================================
  Coverage   97.38%   97.38%           
=======================================
  Files          45       45           
  Lines        2139     2140    +1     
  Branches      405      401    -4     
=======================================
+ Hits         2083     2084    +1     
  Misses         56       56           

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