Hi
You can read more about the Custom CSS feature here.
Please note that we do not provide users with custom code. We also do not provide future troubleshooting for custom code. For reference, check out what we support here:
https://elementor.com/help/how-do-i-get-premium-support/#whatwesupport
Currently, development/custom code queries (custom widgets and functions, Theme Child, custom code and CSS, BETA testing issues, compatibility issues, etc.) have to be directed to our GitHub project, where our developers will be able to assist. Kindly note that our GitHub project is not a support channel; therefore, the response times may vary. We appreciate your understanding.
To post on our GitHub Repository, follow this guide: Contribution Guidelines.