chore: Add small margin to main page on small screens

[MoritzWeber0]

The margin was on the welcome-card before. Since the welcome card is hidden on small screens, the margin wasn't applied on those screens.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.64%. Comparing base (aefb522) to head (e45cad7).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1972   +/-   ##
=======================================
  Coverage   84.64%   84.64%           
=======================================
  Files         211      211           
  Lines        6944     6944           
  Branches      482      482           
=======================================
  Hits         5878     5878           
  Misses        904      904           
  Partials      162      162           

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[github-actions]

This report was generated by comparing 5ae83e5 with aefb522.
If you would like to check difference, please check here.

ArtifactName: reg

✨✨ That's perfect, there is no visual difference! ✨✨

item	count
pass	342
change	0
new	0
delete	0

[github-actions]

A Storybook preview is available for commit 5ae83e5.
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