master-co/css

A markup-driven CSS orchestration language for developers and AI agents.

TypeScript

1,950

5,848 commits

updated Oct 8, 2026

css.master.co

See the code

README

The CSS language and framework for rapidly building modern and high-performance websites

Getting started

Read the installation guide to set up Master CSS for an application.

Community

The Master CSS community can be found here:

Discuss on GitHub - Ask questions, voice ideas, and do any other discussion
Join our Discord Server - Casually chat with other people using the language ^{_{✓ 中文}}

_{Our 《 Code of Conduct 》 applies to all Master CSS community channels.}

Contributing

Please see our CONTRIBUTING for workflow.

Inspiration

Some of the core concepts and designs are inspired by these giants.

The concept of enhanced syntax is inspired by SASS and TypeScript
The concept of Virtual CSS is inspired by the Virtual DOM

css

dynamic-class

engine

framework

html

language

markup-driven

master

progressive-rendering

responsive

runtime

runtime-rendering

server-side-rendering

zero-runtime

Significant stargazers

Andrew Lisowski

431 followers · starred Jan 2023

Lawrence Chou

58 followers · starred Mar 2022

German Jablonski

27 followers · starred Jan 2023

await-ovo

56 followers · starred Jan 2023

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master-co/css

A markup-driven CSS orchestration language for developers and AI agents.

TypeScript

1,950

5,848 commits

updated Oct 8, 2026

css.master.co

See the code

README

The CSS language and framework for rapidly building modern and high-performance websites

Getting started

Read the installation guide to set up Master CSS for an application.

Community

The Master CSS community can be found here:

Discuss on GitHub - Ask questions, voice ideas, and do any other discussion
Join our Discord Server - Casually chat with other people using the language ^{_{✓ 中文}}

_{Our 《 Code of Conduct 》 applies to all Master CSS community channels.}

Contributing

Please see our CONTRIBUTING for workflow.

Inspiration

Some of the core concepts and designs are inspired by these giants.

The concept of enhanced syntax is inspired by SASS and TypeScript
The concept of Virtual CSS is inspired by the Virtual DOM

css

dynamic-class

engine

framework

html

language

markup-driven

master

progressive-rendering

responsive

runtime

runtime-rendering

server-side-rendering

zero-runtime

Significant stargazers

Andrew Lisowski

431 followers · starred Jan 2023

Lawrence Chou

58 followers · starred Mar 2022

German Jablonski

27 followers · starred Jan 2023

await-ovo

56 followers · starred Jan 2023

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lowlighter/matcha

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