Improve styling of navigation, buttons and layouts

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 54.54545% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 95.44%. Comparing base (79ecb76) to head (589eb35).

Files	Patch %	Lines
ludic/web/requests.py	40.00%	3 Missing :warning:
ludic/catalog/navigation.py	66.66%	2 Missing :warning:

:exclamation: Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #45 +/- ## ========================================== - Coverage 95.47% 95.44% -0.04% ========================================== Files 42 42 Lines 2499 2503 +4 ========================================== + Hits 2386 2389 +3 - Misses 113 114 +1 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.