Welcoming Repositories Index CSS Ecosystem
Top Welcoming Open-Source CSS Repositories
Top welcoming CSS repositories. Scored by real 90-day external PR merge rates, maintainer review turnaround speed, and first-time contributor success.
Updated daily • Sat, 10 Oct 2026 UTC
Tracked Repos
2,378
>100 stars verified
Avg Merge Rate
85%
90-day external PRs
Open GFIs
144
Beginner friendly issues
Welcoming Tier
23
S & A Tier maintainers
Ranked CSS Repositories
Showing top 50 of 2,378 ranked repositories
| Rank | Repository | Tier | Score | Merge Rate | Good First Issues |
|---|---|---|---|---|---|
| #1 | Change your GNOME Shell and GTK accent colors dynamically based on your wallpaper. | S•Elite | 75.8 | 90.5% | 1 |
| #2 | TryGhost/Casper2,579 A classic theme for Ghost | A•Welcoming | 68.0 | 94.9% | - |
| #3 | A font! | A•Welcoming | 67.5 | 100.0% | - |
| #4 | A development starter theme for Ghost | A•Welcoming | 66.8 | 98.9% | - |
| #5 | cssnano/cssnano4,978 A modular CSS minifier, built on top of the PostCSS ecosystem. | A•Welcoming | 65.7 | 90.0% | - |
| #6 | A•Welcoming | 65.5 | 100.0% | - | |
| #7 | 🧑🎨 A collection of agentic skills that works | A•Welcoming | 64.4 | 69.2% | - |
| #8 | Fork, Commit, Merge. A project designed to help you familiarize yourself with the open source contribution workflow on GitHub! | A•Welcoming | 63.9 | 75.0% | 140 |
| #9 | Animation-first CSS framework with reusable UI components, modern effects, and zero dependencies. Lightweight, beginner-friendly, and open-source. | A•Welcoming | 62.7 | 12.5% | - |
| #10 | Recipes encapsulate your favourite apps into Ferdium for unified notifications handling and more | A•Welcoming | 62.5 | 88.9% | - |
| #11 | 编程笔记、 AI 学习、观影指南、读书笔记、生活感悟、游戏记录 | B•Solid | 62.5 | 100.0% | - |
| #12 | Documentation for Plausible Analytics | A•Welcoming | 62.2 | 88.9% | - |
| #13 | LiveReload JavaScript code that communicates with the server and implements reloading | A•Welcoming | 62.2 | 100.0% | - |
| #14 | Template project for creating an InfoQ Mini-Book with Asciidoctor | A•Welcoming | 61.6 | 73.7% | - |
| #15 | Site for the open source, community-driven group of dev and organizations working toward an interoperable, decentralized identity ecosystem | B•Solid | 60.7 | 87.5% | - |
| #16 | MacOS Big Sur like theme for Firefox on MacOS & Windows. Make your Firefox look like Safari. | A•Welcoming | 60.7 | 89.6% | - |
| #17 | Minimal Dark Theme for Jellyfin [Customisable] | A•Welcoming | 60.7 | 80.0% | - |
| #18 | OUDS Web is an accessible, ergonomic and Orange branded framework based on Orange Unified Design System and Bootstrap | A•Welcoming | 60.5 | 50.0% | 2 |
| #19 | Combination of VS Code's SynthWave '84 and JupyterLab's Neon Night | A•Welcoming | 59.4 | 90.7% | - |
| #20 | A ZTM Challenge for Hacktoberfest | A•Welcoming | 59.1 | 83.3% | - |
| #21 | SonarQube extension for Visual Studio Code providing code quality and security feedback directly in the editor | A•Welcoming | 58.6 | 69.2% | - |
| #22 | Documentation that also shines | A•Welcoming | 58.4 | 90.9% | - |
| #23 | BASH: Better SSL in Nginx in 10 minutes. Configuration files and setup scripts for Certbot. | A•Welcoming | 57.9 | 88.9% | - |
| #24 | LemmyNet/lemmy-ui1,013 The official web app for lemmy. | B•Solid | 57.6 | 83.3% | - |
| #25 | dginev/ar5iv875 A web service offering HTML5 articles from arXiv.org as converted with latexml | B•Solid | 57.6 | 85.7% | - |
| #26 | 🌵 A collection of 16 desert-inspired high contrast Neovim colorschemes. Let there be light in the desert and dark in the oasis. | B•Solid | 56.9 | 83.3% | - |
| #27 | One-page gallery design with a fully functional lightbox, designed by HTML5 UP | B•Solid | 56.7 | 100.0% | - |
| #28 | Commander - Obsidian Plugin | Add Commands to every part of Obsidian's user interface | B•Solid | 56.6 | 100.0% | - |
| #29 | Microsoft Learning Pathways end user learning solution for Microsoft 365 customers. | B•Solid | 56.3 | 80.0% | - |
| #30 | mblode/marx1,712 The classless CSS reset (perfect for Communists). | B•Solid | 56.2 | 100.0% | - |
| #31 | Julia Project website | A•Welcoming | 56.1 | 72.7% | - |
| #32 | Apache Dubbo documents | A•Welcoming | 55.3 | 91.7% | - |
| #33 | A collection of themes/skins for 50 selfhosted apps! | B•Solid | 55.1 | 75.0% | 1 |
| #34 | An open standard for querying geospatial information on the web. | B•Solid | 55.1 | 83.3% | - |
| #35 | The plaintextaccounting.org website, a portal to the world of Plain Text Accounting. | B•Solid | 55.0 | 100.0% | - |
| #36 | Welcome to the page where you will find each trick/technique/whatever I have learnt in CTFs, real life apps, and reading researches and news. | B•Solid | 55.0 | 66.8% | - |
| #37 | An universal linux port of deezer, supporting Flatpak, Appimage, Snap, RPM, DEB... | B•Solid | 54.9 | 100.0% | - |
| #38 | A modern django dashboard built with daisyui | B•Solid | 54.9 | 100.0% | - |
| #39 | mingw-w64.net web page contents (The new web page) | B•Solid | 54.8 | 50.0% | - |
| #40 | The final form, the true evolution of the chromic theme saga! | B•Solid | 54.8 | 91.7% | - |
| #41 | Brazilian Portuguese Progit2 | B•Solid | 54.7 | 100.0% | - |
| #42 | The flexible and lightweight CSS library designed to streamline your web development. | B•Solid | 54.7 | 64.1% | - |
| #43 | Вопросы на собеседовании по Angular 🅰️ + ответы | B•Solid | 54.5 | 95.5% | - |
| #44 | A minimalistic one-line userChrome.css theme for Firefox | B•Solid | 54.4 | 87.5% | - |
| #45 | A series of plugins and themes for BetterDiscord. | B•Solid | 54.3 | 57.1% | - |
| #46 | A minimalistic and opinionated Obsidian theme for the keyboard-centric user. | B•Solid | 54.1 | 80.0% | - |
| #47 | Arc which receives non-chromium updates every 1-2 weeks! (iykyk) | B•Solid | 53.5 | 100.0% | - |
| #48 | List of awesome apps and website for entertainment. | B•Solid | 52.9 | 100.0% | - |
| #49 | Super fast carousel and slider with touch for optimized websites running in modern browsers. | B•Solid | 52.8 | 100.0% | - |
| #50 | Fully compatible and actively maintained successor to Pico CSS. Introduces float labels, breakout container and other modern, opt-out helpers. Simply switch `pico.css` to `blades.css` OR use `blades.standalone.css` with other frameworks 🥷✨ | B•Solid | 52.8 | 100.0% | - |
How to Get Your CSS PR Merged
1
Check C-Rank™ First: Pick projects with S or A tiers to avoid maintainer ghosts and slow review cycles.
2
Run Local Verification: Ensure test suites and formatting linters pass before opening a pull request.
3
Submit in Maintainer Windows: Check the repository report card to submit when maintainers are most active.
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Frequently Asked Questions: CSS Open Source
What is the most welcoming CSS open-source repository?
The highest-ranked CSS repository on GetMerged is currently Fabito02/ChromaLeon, with a C-Rank score of 75.8/100 and a 90.5% PR merge rate.
How can I find good first issues in CSS?
You can browse verified beginner-friendly issues in CSS by visiting our curated Good First Issues directory at getmerged.abhishekco.de/good-first-issue/css.
What makes a CSS repository ‘Super Welcoming’ on GetMerged?
A ‘Super Welcoming’ (S-Tier) CSS repository demonstrates an external PR merge rate above 80%, a median first response time within 24 to 48 hours, active review feedback, and clear onboarding documentation.