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Sass Tutorials

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Sass (Syntactically Awesome Stylesheets) is scripting language which produces Cascading Style Sheets (CSS).

Sass is compatible with all CSS version and has assorted features. It is open source and developed in Ruby.

What does Sass do?

In simple terms by using Sass and its features we can create robust and large Style sheet with less effort and in less time.

How to Install Sass?

Sass requires Ruby, so if you are using Windows System then you need to install Ruby first.
Here is URL of Ruby Installer.

Otherwise if you use Mac or Linux System then you don’t need Ruby, it is pre-configured.

Use following commands to install Sass

sudo gem install sass

 use following command to verify  Sass is installed properly or not.

sass  -v

To begin with Sass, create Sass “main.scss” file and CSS “main.css” file

Then run following command

sass --watch main.scss:main.css

It will update main.css file whenever you do changes and save Sass file.

Sass Script


1. Variable

Sass variable is use to store information at one place and can be used at various place through out the whole Style Sheet.


$base-font: Arial, sans-serif; $base-color: #555;
h1{ font: 100% $base-font; color: $base-color; }

2. Nesting

Nesting is associated to CSS control structure define under enclosing brackets.

 
section {
  div {
    padding: 10px;
    position: relative;  }
  p { margin: 10px}
} 
Which produce following CSS style.

 
section div {
  padding: 10px;
  position: relative;
}

section p {
  margin: 10px;
}


3. Mixins


 Mixins allow you to group set of CSS code and reuse it by including whole set of those code inside other CSS selectors. it looks like function with parameter.
@mixin border-radius($box-sizing) {   -webkit-box-sizing: $box-sizing;
 -moz-box-sizing: $box-sizing;  -ms-box-sizing: $box-sizing;  box-sizing: $box-sizing; } .container{ @include border-radius(border-box); }

4. Extends

Extends is like inheritance where you can share CSS properties from one selector to another.

 
.button {
  padding: 10px;
  height :30px;
  line-height: 30px;
}

.red-button{
  @extend .button;
  background: red;
}
.green-button {
 @extend .button;
 background: green;
}


5. Partials / Import

Partials are Sass files starts with underscore in beginning of their names.  underscore indicate Sass that it is a Partial and Sass does not convert it into CSS file. you rather include this Partial in other Sass files using @import keyword. Partials create structure of Style files and can be reuse in many other files.

 
// _base.scss

body {
  font-family : Arial, Verdana;
  margin: 0 10px;
}
// home.scss

@import 'base';

p {
    background-color: #eee;
}

6. Operators


Sass provides +, -, *,  % and / operators to perform mathematical operations.

 
$width: 900px;

.md-1 {
  width: $width;
}

.md-2{
  width: $width/2;
}

.md-4{
  width: $width/4;
}

References

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