# Custom Properties: Variables in CSS

A custom property gives a value such as a brand color a name you choose, once, and every rule that reads it with var() follows when that one value changes.

![Cheat sheet: Custom Properties: Variables in CSS](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/10/002d9096f00947718d8550e9e148c3a1.webp)

- Category: CSS
- Level: Apprentice
- Tags: CSS, Custom property, Custom property fallback, Inheritance (css), var()
- Updated: November 1, 2026

Source: https://www.ask-codey.com/cheat-sheets/css-custom-properties-cheat-sheet