Improve TrainSubNavBar style and make subnavbar height consistent

[viliket]

No description provided.

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a47aecc) 99.26% compared to head (688b773) 99.26%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #36   +/-   ##
=======================================
  Coverage   99.26%   99.26%           
=======================================
  Files          32       32           
  Lines         815      815           
  Branches      235      235           
=======================================
  Hits          809      809           
  Misses          6        6           

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