If you're using ViewEncapsulation value which is different than default, it might be daunting to set the value manually for every component.

Luckily you can configure it globally when bootstrapping your app:

platformBrowserDynamic().bootstrapModule(AppModule, [
      {
        // NOTE: Use ViewEncapsulation.None only if you know what you're doing.
        defaultEncapsulation: ViewEncapsulation.None
      }
    ]);