sass + less relevant

Getting Started tutorial sass -sass   http://www.w3cplus.com/sassguide/

CanvasRenderingContext2D  https://developer.mozilla.org/zh-CN/docs/Web/API/CanvasRenderingContext2D

Photoshop CC and the front end of those things   http://isux.tencent.com/ps-photoshop-cc-fd.html

Less Chinese network    http://lesscss.cn/

Getting Started | Less.js Chinese documents   http://less.bootcss.com/

LESS a dynamic style language   http://www.bootcss.com/p/lesscss/

Less study manual    http://www.1024i.com/demo/less/

z.less api  http://www.aibusy.com/zless/