Less.js 发布了 3.0 正式版，该版本改进内容包括：
Fix calc() function to not do math operations on compile
Rename Directive -> AtRule & Rule -> Declaration
Cross-platform @plugin loading! (Node & Browser)
Numerous changes / improvements to plugin architecture
Simplified API calls in plugins (less.atrule() vs new less.tree.AtRule())
Property accessors ($width to refer to width: 300px value)
Inline JavaScript disabled by default for security reasons (use @plugin)
Improvements in Less error reporting
Added feature: returning null / false from Less functions will remove that line
Simple boolean() and if() functions added
Bug fixes
Removal of unnecessary nodes from API (like IE's alpha())
Less CSS 是一个使用广泛的 CSS 预处理器，通过简单的语法和变量对 CSS 进行扩展，可减少很多 CSS 的代码量。
LESS 将 CSS 赋予了动态语言的特性，如 变量， 继承， 运算， 函数. LESS 既可以在 客户端 上运行 (支持IE 6+, Webkit, Firefox)，也可一在服务端运行 (借助 Node.js).
软件详情：https://github.com/less/less.js
下载地址：https://gitee.com/mirrors/lessCSS
来自:开源中国社区
