[TOC] **** 借助工具减少不必要的重复性劳动！ # Tools Manage SASS, LESS, and Stylus [10+ Best Tools and Resources to Compile & Manage SASS, LESS, and Stylus – CSS Preprocessors](https://graygrids.com/best-tools-resources-compile-manage-sass-less-stylus-css-preprocessors/) # [Spritemapper](http://yostudios.github.io/Spritemapper/) Spritemapper应用可将多张小图片合并为一张图片，从而减少服务器的Http连接数，对提高网站的吞吐量有一定帮助，同时它还会每个图像切片产生相应的CSS定位。 # css portal https://www.cssportal.com http://beautifytools.com/ # 参考 [css教程：web页面加载速度提升必备优化工具](http://www.seo8.org/jiaocheng/475.html) [前端开发必备 40款优秀CSS代码编写工具推荐](http://www.admin10000.com/document/3777.html)