What gets lost going Stylus → CSS?

Variables, mixins, nesting, and arithmetic all get resolved to their concrete values. The output is a flat stylesheet with no preprocessor features.

Does it preserve @media queries?

Yes. Nested media queries (a Stylus feature) get hoisted to top-level CSS media queries with adjusted selectors.

Will deeply nested Stylus work?

Yes — every level of nesting expands into compound selectors. Very deep nesting produces verbose CSS; flatten your Stylus source if the output looks bloated.

Can I use this as a build step?

For small snippets yes. For a full build, use the Stylus CLI in your pipeline — this tool is for quick one-off conversions.

Stylus to CSS | DevTools Surf

DevTools Surf

Example: Stylus to CSS

A worked example, rendered from real sample data. Sign in to run the tool on your own input.

Input

.card
  display flex
  gap 1rem
  padding 1.5rem
  border-radius 0.75rem
  background #fff

Output

.card {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: 0.75rem;
  background: #fff;
}

About Stylus to CSS

Convert Stylus to standard CSS. Part of the DevTools Surf developer suite. Browse more tools in the CSS collection.

Use Cases

Teams migrating away from Stylus to standard CSS for simplicity
Developers extracting compiled CSS from legacy Stylus projects
DevOps engineers removing Stylus build dependencies from pipelines
Frontend devs converting Stylus components to CSS modules

Tips

Verify that Stylus mixins expand to standard CSS correctly
Check that variable references are resolved to actual values
Ensure conditional styles are flattened properly in the output

Fun Facts

Stylus can operate without any punctuation at all, making it the most terse CSS preprocessor available.
Stylus includes a built-in function library with over 40 color manipulation functions like lighten(), darken(), and saturate().
The Stylus project was maintained by the Node.js community after TJ Holowaychuk stepped back from open source around 2014.

FAQ

What gets lost going Stylus → CSS?: Variables, mixins, nesting, and arithmetic all get resolved to their concrete values. The output is a flat stylesheet with no preprocessor features.
Does it preserve @media queries?: Yes. Nested media queries (a Stylus feature) get hoisted to top-level CSS media queries with adjusted selectors.
Will deeply nested Stylus work?: Yes — every level of nesting expands into compound selectors. Very deep nesting produces verbose CSS; flatten your Stylus source if the output looks bloated.
Can I use this as a build step?: For small snippets yes. For a full build, use the Stylus CLI in your pipeline — this tool is for quick one-off conversions.

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