When you have a base style sheet (it can be a framework or a base style sheet for your main application and sections overwriting them or custom style sheets for

When you have a base style sheet (it can be a framework or a base style sheet for your main application and sections overwriting them or custom style sheets for some tenants of your application or whatever) that you want to customize? Many component-based designs also prefer repeating styles for each component because of maintainability but I guess they wouldn't be counted in the article as they use generated root names. My point is, not repeating styles should not be the target, but it may of course be the side-effect.