> Import the desired components [...] and the CSS This is where you lost me. If I import a component i would like very much their styles to be self contained.

> Import the desired components [...] and the CSS This is where you lost me. If I import a component i would like very much their styles to be self contained. It can handle customization using css-in-js or passing class-names, but having it leak to my components is just such a turn-off.