May i recommend - https://github.com/gnat/css-scope-inline https://github.com/gnat/css-scope-inline I am using it in a project and it has been working quite wel

May i recommend - https://github.com/gnat/css-scope-inline https://github.com/gnat/css-scope-inline I am using it in a project and it has been working quite well. And i think it would work along with the Nue design system as well.