12 Using preprocessors
This chapter covers
- CSS preprocessors
- Examples of how Sass extends CSS functionality
So far in this book, we’ve been writing all our styles using plain CSS. We can also use preprocessors, however. Each processor has its own syntax, and most preprocessors extend the existing CSS functionality. The most commonly used are
-
Sass (https://sass-lang.com)
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Less (https://lesscss.org)
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Stylus (https://stylus-lang.com)
They were created to facilitate writing code that’s easier to read and maintain as well as to add functionality that’s not available in CSS. Styles written for use with preprocessors have their own syntax and must be built or compiled into CSS. Although some preprocessors provide browser-side compilation, the ...
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