Stylesheet languages

Gyaanmitra treats .css, .scss, and .less as languages it knows well. Completions cover properties, values, and at-rules. The gutter shows color swatches for hex, rgb(), and similar values.

Custom properties and nesting

CSS custom properties (--token) show up in completion once they are defined in the project. Modern nesting and common SCSS and Less constructs are understood well enough for navigation and basic checks. For a heavy preprocessor setup, let your build be the place that reports compile errors.

Emmet in stylesheets

Emmet abbreviations work in CSS-family files too. They are handy for a quick rule scaffold. Details are under Emmet.

Linting

Built-in checks catch unknown properties and simple mistakes. Deeper lint rules usually come from an Open VSX extension, or from your project's CLI linter, wired through a task or the Problems panel.