Style Sheets
With IntelliJ IDEA, you can write style definitions in CSS as well as in various languages that compile into it, such as Sass, Less, SCSS, or Stylus.
You can also look up documentation for Style Sheets, create and move rulesets, introduce variables, and more.
Before you start
Make sure the CSS plugin is enabled in the settings. Press Ctrl+Alt+S to open settings and then select . Click the Installed tab. In the search field, type CSS. For more information about plugins, refer to Managing plugins.
16 February 2026