Add method render() in CssClass::class.

[terabytesoftw]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	❌

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (0bb6345) to head (7a91b21).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main        #6   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity        99       101    +2     
===========================================
  Files              8         8           
  Lines            214       224   +10     
===========================================
+ Hits             214       224   +10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.