Cant override paper elements CSS

[conceptree]

Hello,

Just a quick walktrough of my current problem.

I am part of a project that started on polymer 2.0 but is not fully migrated to stencil js and so we are trying to move away from bower completely.

During this cleanup, I am getting a hardtime on keep some of the paper-elements that we reuse on some of our design system components because I am not able to override its styles so it follows our common look and feel.

On example is the paper-input. the --paper-input-container:{} don't work at all.

Is there any polyfill and how-to overcome this problem out there?

Thanks in advance.