.scss

What is a .scss file?

SCSS is a CSS preprocessor syntax — adding variables, nesting, mixins, and functions that compile to standard CSS.

Safe format
Type Code
By Hampton Catlin / Natalie Weizenbaum
MIME text/x-scss

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What is it

You're looking at a .scss file — CSS with superpowers. SCSS (Sassy CSS) adds variables, nesting, mixins, functions, and partials to standard CSS, making large stylesheets maintainable instead of nightmarish. It compiles to regular CSS that browsers understand.

SCSS is the newer syntax of the Sass preprocessor (the original Sass used indentation instead of braces — SCSS uses standard CSS syntax, making it a strict superset of CSS). Any valid CSS file is also valid SCSS, which means you can adopt it incrementally. Variables (`$primary-color: #4589FF`), nesting (putting `.nav .link` styles inside `.nav`), and mixins (reusable blocks of styles) are the features that make the biggest difference in day-to-day work.

Any text editor opens .scss files. VS Code has built-in SCSS syntax support. To compile SCSS to CSS, use the `sass` CLI tool (`npm install -g sass && sass input.scss output.css`), or let your build tool (Vite, webpack, Parcel) handle it automatically. Note: CSS has caught up significantly — custom properties (variables), nesting (new), and container queries are now native CSS features.

Technical details
Full Name
Sass Stylesheet
MIME Type
text/x-scss
Developer
Hampton Catlin / Natalie Weizenbaum
Magic Bytes
N/A
Safety
.scss is a known, safe format.
What opens it
VS Code
FREE All
Any text editor
FREE All
FAQ
Do I still need SCSS now that CSS has variables?
CSS custom properties cover variables, and CSS nesting is shipping in browsers. But SCSS still offers mixins, functions, partials, and a mature ecosystem. For new projects, you might not need SCSS — but it's still valuable for complex design systems.
What's the difference between SCSS and Sass?
Same preprocessor, different syntax. SCSS uses curly braces and semicolons (like CSS). Sass (indented syntax) uses indentation (like Python). SCSS is more popular because any valid CSS is also valid SCSS.
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