tweak diff view styles

[nightwing]

added missing styles from cloudEditor

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.84%. Comparing base (1ae3943) to head (7d321a6).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5850      +/-   ##
==========================================
- Coverage   87.84%   87.84%   -0.01%     
==========================================
  Files         622      622              
  Lines       46383    46383              
  Branches     7598     7598              
==========================================
- Hits        40745    40744       -1     
- Misses       5638     5639       +1     

Flag	Coverage Δ
unittests	87.84% <ø> (-0.01%)	⬇️

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