CSS Variables allow reusable, dynamic styling in CSS.
1. Defining Variables
:root {
--primary-color: #3498db;
}
2. Using Variables
button {
background-color: var(--primary-color);
}
3. Advantages
- Easy theme management
- Dynamic updates with JS
Conclusion
CSS Variables improve maintainability and flexibility of stylesheets.

Variables save a ton of repetitive CSS. Love it!