What is a key benefit of applying tokens via CSS variables?

What is a key benefit of applying tokens via CSS variables?

• A. They permanently hardcode styles across all components.
• B. They allow dynamic overrides and consistent theming with easier maintenance.
• C. They are deprecated in modern browsers.
• D. They only work with grayscale colors.

Answer: (B)

Tokens via CSS variables let design values live in the cascade and be overridden at different scopes. That means you can switch themes or respond to user preferences by changing the token values in one place (or in a theme-specific class or media query), and every component that uses those tokens updates automatically. This makes theming consistent across the whole project and simplifies maintenance because there’s a single source of truth for values like colors, spacing, and typography. They’re not fixed hard values; they’re overridable, and they work in modern browsers, not just grayscale. This flexibility is what makes them especially powerful for scalable design systems.

Tokens via CSS variables let design values live in the cascade and be overridden at different scopes. That means you can switch themes or respond to user preferences by changing the token values in one place (or in a theme-specific class or media query), and every component that uses those tokens updates automatically. This makes theming consistent across the whole project and simplifies maintenance because there’s a single source of truth for values like colors, spacing, and typography. They’re not fixed hard values; they’re overridable, and they work in modern browsers, not just grayscale. This flexibility is what makes them especially powerful for scalable design systems.