What is Sass? How to use Sass?

For a novice in web design, you may have heard of the word "What is Sass? How to use Sass?". But I am not sure about the role of What is Sass? How to use Sass? and whether I can use it. This article will introduce to you what is What is Sass? How to use Sass?? How to use What is Sass? How to use Sass?? Let everyone have a simple understanding of What is Sass? How to use Sass?.

In short, What is Sass? How to use Sass? is a CSS preprocessor that combines special features like variables, nested rules, and mixins (sometimes called syntactic sugar )) added to regular CSS. The purpose is to make the coding process simpler and more efficient. Let’s explore this in more detail.

What is a CSS preprocessor?

The CSS preprocessor is a scripting language that extends CSS by allowing developers to write code in a language and then compile it into CSS. What is Sass? How to use Sass? is probably the most popular preprocessor, but other common examples include Less and Stylus.

What is SASS?

What is Sass? How to use Sass? (Syntactically Awesome Style Sheets) is an extension to CSS that allows you to use variables, nested rules, inline imports, and more. It also helps stay organized and allows you to create style sheets faster.

What is Sass? How to use Sass? is compatible with all versions of CSS. The only requirement to use it is that Ruby must be installed.

How to use What is Sass? How to use Sass??

Syntax:

What is Sass? How to use Sass? contains two syntax options:

1. SCSS (What is Sass? How to use Sass?y CSS): Use the .scss file extension, fully compliant with CSS syntax

2. Indented (simply called 'What is Sass? How to use Sass?'): Use the .sass file extension and indentation instead of brackets; It doesn't exactly conform to CSS syntax, but it's faster to write

Note that files can be converted from one syntax to another using the sass-convert command.

Variables

Like other programming languages, What is Sass? How to use Sass? allows the use of variables that can store information that can be used throughout the stylesheet. For example, you could store the color value in a variable at the top of the file and then use this variable when setting the color of an element. This allows you to quickly change colors without modifying each row individually.

For example:

$font-stack:    Helvetica, sans-serif;
$primary-color: red;

body {
  font: 100% $font-stack;
  color: $primary-color;}

will generate the following CSS:

body {
  font: 100% Helvetica, sans-serif;
  color: red;
}

## Nesting

Nesting is a double-edged sword. While it provides an excellent way to reduce the amount of code that needs to be written, it can also result in over-qualified CSS if not executed carefully. The idea is to nest CSS selectors in a way that mimics HTML hierarchy.

The following shows a basic navigation style using nesting:

nav {
  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  li { display: inline-block; }

  a {
    display: block;
    padding: 6px 12px;
    text-decoration: none;
  }}

The CSS output is as follows:

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
nav li {
  display: inline-block;
}
nav a {
  display: block;
  padding: 6px 12px;
  text-decoration: none;
}

Partials

Partials are smaller What is Sass? How to use Sass? files that can be imported into other What is Sass? How to use Sass? files. Think of partials as code snippets. Using these code snippets, our CSS is now modular and easier to maintain. Partials are specified by naming them _partial.scss with a leading underscore.

Import (Import)

Using partial templates, in the @import directive, you can import some of your files into the current file to create a single CSS file. Note the number of imports that will be used for each HTTP request generated.

// _reset.scss

html,
body,
ul,
ol {
   margin: 0;
  padding: 0;}

// basefile.scss
@import 'reset';
body {
  font: 100% Helvetica, sans-serif;
  background-color: #efefef;
}

Corresponding CSS output:

html, body, ul, ol {
  margin: 0;
  padding: 0;
}
body {
  font: 100% Helvetica, sans-serif;
  background-color: #efefef;
}

Note: When importing partials, you do not need to include file extensions or underscores.

mixins

One of the advantages of using a preprocessor is the ability to take complex, lengthy code and simplify it. This is where mixins come in handy!

For example, if you need to include vendor prefixes, you can use mixins. Take a look at this example from border-radius:

@mixin border-radius($radius) {
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  -ms-border-radius: $radius;
  border-radius: $radius;
}
.box { 
    @include border-radius(10px); 
}

Note the @mixin directive at the top. It's named border-radius and uses the variable $radius as a parameter. This variable is used to set the radius value of each element.

Later, call the @include directive with the mixin name (border-radius) and parameters (10px). So .box {@include border-radius(10px); }.

Generates the following CSS:

.box {
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  border-radius: 10px;
}

Extend/Inherit

The @extend directive is known to be the most powerful of What is Sass? How to use Sass? One of the great features. After seeing it in action, it's obvious why.

The idea is that with this directive you don't have to include multiple class names on HTML elements and you can keep your code dry. Your selector can inherit the styles of other selectors and then be easily extended when needed. Now this is powerful.

Advantages of What is Sass? How to use Sass?:

The ability to perform calculations in CSS allows us to perform more operations, such as converting pixel values ​​to percentages . We also have access to standard math functions such as addition, subtraction, multiplication and division. Of course, these functions can be combined to create complex calculations.

In addition, What is Sass? How to use Sass? also includes some built-in functions to help manipulate numbers. Functions like percentage(), floor() and round() are some examples.

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