Suggest an editImprove this articleRefine the answer for “What are the advantages of preprocessors over plain CSS?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**The advantages of preprocessors over plain CSS** come down to extending the language's capabilities and making development more efficient: variables, nested selectors, mixins and functions, import and code structuring, operations and calculations, improved readability. **Key point:** preprocessors solve problems of scalability, repetition and order in styles that plain CSS either lacks or implements more weakly.Shown above the full answer for quick recall.Answer (EN)ImageThe main advantages of preprocessors over plain CSS come down to extending the language's capabilities and making development more efficient: ### 1. Variables Let you store repeating values (colors, sizes, fonts) in one place and change them centrally. In plain CSS this capability appeared late and in a more limited form. ### 2. Nested selectors Preprocessors let you write styles in a logical tree structure that matches the markup. In CSS you have to manually write out long cascading selectors, which is harder to read. ### 3. Mixins and functions You can describe a repeating style once (for example, a complex box-shadow or a set of flex properties) and reuse it. This reduces copy-pasting and lowers the chance of errors. ### 4. Import and code structuring A project can be split into modules and conveniently assembled into a single file. In plain CSS `@import` is inconvenient and affects performance, while preprocessors can assemble the structure at compile time. ### 5. Operations and calculations Support for mathematical expressions right inside the styles (for example, dividing widths, calculating spacing, changing a color's brightness). In CSS such things have to be worked out manually. ### 6. Improved readability and maintainability The code ends up more compact, more logical and easier to maintain in large projects, especially with a team. --- In the end, preprocessors solve problems of scalability, repetition and order in styles that plain CSS either lacks or implements more weakly.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.