Sass && SCSS && Less

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Sass && SCSS && Less

在线SCSS编辑工具:

http://www.sassmeister.com/

Sass v3.4.21

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tutorial;

https://www.codecademy.com/en/courses/learn-sass

http://www.imooc.com/learn/311

http://www.imooc.com/learn/436

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web 开发常用单位，单位转换器：

1 inch = 96 pixel (X);
1 inch = 72 point (computer)

单位转换器：
http://www.unitconversion.org/typography/inchs-to-pixels-y-conversion.html
http://www.translatorscafe.com/cafe/ZH-CN/units-converter/typography/

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