What are the benefits of CSS variables?

What are the benefits of using CSS variables in my web projects?

CSS variables, or custom properties, allow for easier maintenance and flexibility in your stylesheets. They enable you to define a value once and reuse it throughout your CSS, making it simpler to manage themes and design changes.

Can you give me an example of how to use CSS variables?

Sure! You can define a CSS variable like this: --main-color: #3498db;. Then, you can use it in your styles: color: var(--main-color);.

Are there any performance issues with CSS variables?

Generally, CSS variables have minimal performance impact. They are processed by the browser's rendering engine efficiently, but excessive use in complex styles can lead to slight performance overhead.

How do CSS variables compare to preprocessor variables?

CSS variables are dynamic and can be changed at runtime, while preprocessor variables are static and resolved at compile time. This makes CSS variables more flexible for responsive designs.