Beginning CSS Preprocessors: With SASS, Compass.js and by Anirudh Prabhu

By Anirudh Prabhu

Learn how preprocessors could make CSS scalable and simple to take care of. you will see find out how to write code in a truly fresh and scalable demeanour and use CSS preprocessor positive aspects reminiscent of variables and looping, that are lacking in CSS natively. interpreting Beginning CSS Preprocessors will make your existence a lot less complicated by way of exhibiting you the way to create reusable chunks of code. as well as coding improvements, you’ll additionally learn how to automate techniques equivalent to producing photo sprites and minifying code.

Beginning CSS Preprocessors is your consultant for purchasing began with CSS preprocessors. This ebook exhibits you the way to take advantage of CSS on your daily paintings and therefore be clever and effective at writing CSS.

  • What are preprocessors
  • What are the identified preprocessor frameworks
  • What are the beneficial properties of Sass (Syntactically extraordinary Stylesheets)
  • What is Compass (COMPrehensive ASSembler)
  • What is much less (Leaner SS)

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Extra info for Beginning CSS Preprocessors: With SASS, Compass.js and Less.js

Example text

Listing 3-22. strongText; Color:#F00; } 43 Chapter 3 ■ Advanced Sass This code will give the output shown in Listing 3-23. Listing 3-23. error { Color: #F00; } It is also possible to chain the selectors while extending; that is, extending one selector that already extends another selector. Here is the modified code of Listing 3-24 to demonstrate this phenomenon. Listing 3-24. strongText; Color:#F00; } The output of this code will be same as shown in Listing 3-23. There might be situations where you want @extend to be ignored if the extended selector has as error or is not present.

Using & to Refer to the Parent Selector a { text-decoration:none; &:hover { text-decoration:underline; } } When this code is compiled, & is replaced with the parent selector. The compiled output is shown in Listing 2-24. Listing 2-24. Output of Listing 2-23 a { text-decoration:none; } a:hover{ text-decoration:underline; } 25 Chapter 2 ■ Introduction to Sass Another feature of & is that it resolves the parent selector regardless of any depth in nesting. Consider the code in Listing 2-25. Listing 2-25.

SpecialNote { border-color: #00F; border-width: 1px; border-style: dashed; font: 1px arial, sans-serif; } Using Content Blocks in Mixins You can also pass blocks of styles to the mixin, which can be placed in addition to the styles provided by mixins. These styles are added wherever the @content rule is declared. The modified version of the previous example would look as shown in Listing 3-43. Listing 3-43. 8em; } } 50 Chapter 3 ■ Advanced Sass The output of this snippet is shown in Listing 3-44.

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