lesss

Lesss is not a widely recognized term in software or web development. It is likely a misspelling or variant of LESS, a popular CSS preprocessor that extends CSS with additional features and a preprocessing step.

LESS stands for Leaner CSS. It allows developers to write styles with variables, mixins, nested rules, operations, and functions, and then compile the code into standard CSS that can be interpreted by browsers.

Key features include variables introduced with an at sign, for example: @primary: #4D926F;. Mixins enable reusable groups of properties; nested rules reflect the HTML structure; and operations perform calculations on colors and values.

Usage typically involves installing a compiler or processor, such as the LESS.js client, the lessc command-line tool, or build systems that integrate LESS into the pipeline. Compiled CSS can be emitted to a file or served directly, often with source maps for debugging.

LESS was created by Alexis Sellier in 2009 and became widely adopted in the early 2010s. It remains an open‑source project with an active ecosystem, but some projects have migrated to standard CSS features or other preprocessors in response to evolving web standards.