OfficeDev/office-ui-fabric-core
The front-end CSS framework for building experiences for Office and Microsoft 365. observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 1
- Release rhythm 8
- Longevity 100
Flags: archived no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4124
- days_rel: n/a
- days_push: 597
- n_releases_24m: 0
Adoption not part of the score
3741 stars · 459 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Office UI Fabric Core is the SCSS-based front-end CSS framework implementing the Office Design Language (now branded Fluent UI) for building web experiences consistent with Office and Microsoft 365. It provides core styles such as icons, typography, fonts, colors, and grid layout, separate from the companion Office UI Fabric React component library.
Use cases
- style an Office Add-in to match Microsoft 365 design language
- get Office-style icons, fonts, colors, and grid in a web app
- build a responsive mobile-first UI with Fluent design styles
- customize SCSS styles for a SharePoint or Office-branded site
- pair core styles with Office UI Fabric React components
When to choose
- building Office Add-ins or Microsoft 365-integrated web experiences
- you need the Office/Fluent design language in plain CSS/SCSS without React
- you want CDN or npm-distributed core styles for icons, type, and grid
When to avoid
- building non-Microsoft-branded apps where Fluent styling is unnecessary
- you need full UI components rather than core styles (use Office UI Fabric React / Fluent UI React)
- starting a brand-new project, since the repo is in maintenance and Fluent UI is the successor
Facets
framework · maturity maintenance
css-framework ui-components frontend-framework web-development frontend web-design cross-platform scss office-design-language fluent-ui microsoft-365 icons responsive-design office-add-ins web-server
4 sources
- readme: https://github.com/OfficeDev/office-ui-fabric-core · fetched 2026-08-28 · 414c9c1eda30
- homepage: https://developer.microsoft.com/en-us/fabric · fetched 2026-08-29 · 0d374933ee99
- site_page: https://learn.microsoft.com/docs · fetched 2026-08-29 · f29800be2b9a
- site_page: https://www.microsoft.com/about · fetched 2026-08-29 · 743b30305950
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| OfficeDev/office-ui-fabric-core | main | 10 |
For agents
markdown · JSON · MCP: product_card(name="OfficeDev/office-ui-fabric-core")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem