Add css file

[OStefan2001]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 22.44%. Comparing base (5093d01) to head (0f23403).
⚠️ Report is 4 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop      #13   +/-   ##
==========================================
  Coverage      22.44%   22.44%           
  Complexity       178      178           
==========================================
  Files             43       43           
  Lines            811      811           
==========================================
  Hits             182      182           
  Misses           629      629           

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