What is Marsel?
A CSS framework designed for developers who want to go quickly — without configuration files, without compilation chains, without hassle.
Write the style directly in the HTML.
With most CSS tools you have to configure webpack, manage separate files, wait for compilation. Marssel removes all these steps.
You add a class in your HTML. The style is applied immediately in the browser. No CSS file to maintain.
- No external dependencies
- Syntax based on standard CSS — nothing to relearn
- CSS generated only for classes used
In 3 steps
What we commit to keeping
No empty promises. Here is what Marssel is concretely committed to.
100% open source
The code is public, contributions are welcome. You can see how it works, suggest improvements, report a bug.
Everything included, nothing extra to install
Modals, Carousels, Tooltips, icons — everything is natively integrated. No need to add ten libraries to build an interface.
Continuously improved
Marssel evolves with feedback from the community. Updates are regular, documented and always backwards compatible.
Born from developer frustration.
“We spend more time configuring tools than actually creating. I designed Marssel so that the technical part fades away, and the creative part takes over. »
— Valentin Banse, Fondateur de LVNS Studio
LVNS Studio is the independent studio behind Marssel. His conviction: development tools must adapt to developers, not the other way around. Marssel is the direct result of this philosophy.
From idea to launch
The major stages that built Marssel.
Early 2025
The idea
A configuration-free CSS framework, with syntax that resembles native CSS. First sketch of the concept.
Mid-2025
The engine
Development of the on-the-fly CSS generation system, intelligent lazy loading and the first components.
March 2026
Version 1.0
Official launch: more than 15 components, an icon library, complete documentation and an interactive playground.
2026 and beyond
The sequel
New features and improvements based on your feedback. The adventure continues.
Ready to try it?
Marsel is free, open source, and ready to use. Get started in minutes.