# Stylesheet

A file or block of CSS rules that styles one or many pages.

## What is a **stylesheet**?

A **stylesheet** is a file (or block) of CSS rules. One stylesheet can style every page of a site, so a change in one place updates them all.

```css
/* styles.css */
body { font-family: Arial, sans-serif; }
.button { background: teal; color: white; }
```

Level: Novice · [More CSS terms at this level](https://www.ask-codey.com/glossary/subjects/css/novice)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/stylesheet