Add Css rules for custom properties fields

[meven]

Signed-off-by: Méven Car [email protected] Change-Id: I4b57a1c04dc67620f4ee010e17fff4f9e677d0de (cherry picked from commit 8b2f8916b3490d273c3690125ad18aeb46d69924)

• Resolves: #
• Target version: master

Summary

TODO

• [ ] ...

Checklist

• [ ] Code is properly formatted
• [ ] All commits have Change-Id
• [ ] I have run tests with make check
• [ ] I have issued make run and manually verified that everything looks okay
• [ ] Documentation (manuals or wiki) has been updated or is not required