Mozilla / Firefox · Design system overview
Mozilla's public design system documenting foundations, components, and patterns for the Firefox desktop and mobile browsers.
A community-authored reference in Markdown. Unofficial; not affiliated with Mozilla / Firefox.
Exactly what ships in firefox-acorn-design.md. This entry doesn't have a full editorial breakdown yet, so the spec covers the verified facts — profile, official source, and an AI-ready prompt.
# Acorn — Design Style Reference > **Unofficial, community-authored reference.** Compiled by [designsystems.one](https://www.designsystems.one). Not affiliated with, endorsed by, or sponsored by Mozilla / Firefox. "Acorn" and related marks belong to their respective owners. This document describes publicly observable style attributes in original words — it contains no copied documentation, logos, icon artwork, or original token files. Always defer to the official source for canonical, current values. **System:** Acorn **Owner:** Mozilla / Firefox **Official documentation:** https://acorn.firefox.com/ --- ## Summary Mozilla's public design system documenting foundations, components, and patterns for the Firefox desktop and mobile browsers. ## Engineering profile - **Source model:** Hybrid - **Figma:** Official Figma kit ## Apply this style with an AI tool Paste this into your AI coding assistant as a direction, then iterate: > Design in the spirit of Acorn by Mozilla / Firefox — Mozilla's public design system documenting foundations, components, and patterns for the Firefox desktop and mobile browsers. Match the intent, not the pixels; adapt it to my product rather than cloning it. ## Official reference - [Acorn documentation](https://acorn.firefox.com/) --- _Generated by [designsystems.one](https://www.designsystems.one/design-systems/firefox-acorn) — a catalogue of public design systems. Style facts are reported for reference and education; adapt them to your own product. Report issues or takedown requests via the site._
Want the deep dive?
Acorn doesn't have a full editorial breakdown yet — those cover origin, governance, token decisions, and the components worth studying. Thirty-seven anchor systems do.
