zss

December 23, 2025 ยท View on GitHub

zss is a CSS layout engine and document renderer, written in Zig.

Building zss

To build zss, simply run zig build --help to see your options.

zss uses version 0.15.2 of the zig compiler.

Standards Implemented

In general, zss tries to implement the standards contained in CSS Snapshot 2023.

ModuleLevelProgress
CSS Level 22.2Partial
Syntax3Partial
Selectors3Partial
Cascading and Inheritance4Partial
Backgrounds and Borders3Partial
Values and Units3Partial
Namespaces3Partial

License

See LICENSE.md for detailed licensing information.