mirror of
https://github.com/adambard/learnxinyminutes-docs.git
synced 2024-12-23 09:41:36 +00:00
228 lines
4.3 KiB
Markdown
228 lines
4.3 KiB
Markdown
---
|
|
name: Stylus
|
|
filename: learnStylus.styl
|
|
contributors:
|
|
- ["Salomão Neto", "https://github.com/salomaosnff"]
|
|
- ["Isaac Henrique", "https://github.com/Isaachi1"]
|
|
translators:
|
|
- ["Divay Prakash", "https://github.com/divayprakash"]
|
|
---
|
|
|
|
Stylus is a dynamic stylesheet preprocessor language that is compiled into CSS. It aims to add functionality to CSS without breaking compatibility across web browsers.
|
|
It does this using variables, nesting, mixins, functions and more.
|
|
|
|
Stylus syntax is very flexible. You can use standard CSS syntax and leave the semicolon (;), colon (:) and even the ({) and (}) optional, making your code even more readable.
|
|
|
|
Stylus does not provide new style options, but gives functionality that lets you make your CSS much more dynamic.
|
|
|
|
```scss
|
|
/* Code style
|
|
==============================*/
|
|
|
|
/* Keys, semicolon, and colon are optional in Stylus. */
|
|
|
|
body {
|
|
background: #000;
|
|
}
|
|
|
|
body {
|
|
background: #000
|
|
}
|
|
|
|
body {
|
|
background #000
|
|
}
|
|
|
|
body
|
|
background #000
|
|
|
|
body
|
|
background: #000;
|
|
|
|
body
|
|
background: #000
|
|
|
|
// Single-line comments are removed when Stylus is compiled into CSS.
|
|
|
|
/* Multi-line comments are preserved. */
|
|
|
|
|
|
/* Selectors
|
|
==============================*/
|
|
|
|
/* Selecting elements within another element */
|
|
body {
|
|
background: #000000;
|
|
h1 {
|
|
color: #FF0000;
|
|
}
|
|
}
|
|
|
|
/* Or if you prefer... */
|
|
body
|
|
background #000000
|
|
h1
|
|
color #FF0000
|
|
|
|
|
|
/* Getting parent element reference
|
|
==============================*/
|
|
a {
|
|
color: #0088dd;
|
|
&:hover {
|
|
color: #DD8800;
|
|
}
|
|
}
|
|
|
|
|
|
/* Variables
|
|
==============================*/
|
|
|
|
|
|
/*
|
|
You can store a CSS value (such as the color) of a variable.
|
|
Although it is optional, it is recommended to add $ before a variable name
|
|
so you can distinguish a variable from another CSS value.
|
|
*/
|
|
|
|
$primary-color = #A3A4FF
|
|
$secondary-color = #51527F
|
|
$body-font = 'Roboto', sans-serif
|
|
|
|
/* You can use variables throughout your style sheet.
|
|
Now, if you want to change the color, you only have to make the change once. */
|
|
|
|
body
|
|
background-color $primary-color
|
|
color $secondary-color
|
|
font-family $body-font
|
|
|
|
/* After compilation: */
|
|
body {
|
|
background-color: #A3A4FF;
|
|
color: #51527F;
|
|
font-family: 'Roboto', sans-serif;
|
|
}
|
|
|
|
/ *
|
|
This is much easier to maintain than having to change color
|
|
each time it appears throughout your style sheet.
|
|
* /
|
|
|
|
|
|
/* Mixins
|
|
==============================*/
|
|
|
|
/* If you find that you are writing the same code for more than one
|
|
element, you may want to store that code in a mixin.
|
|
|
|
center()
|
|
display block
|
|
margin-left auto
|
|
margin-right auto
|
|
left 0
|
|
right 0
|
|
|
|
/* Using the mixin */
|
|
body {
|
|
center()
|
|
background-color: $primary-color
|
|
}
|
|
|
|
/* After compilation: */
|
|
div {
|
|
display: block;
|
|
margin-left: auto;
|
|
margin-right: auto;
|
|
left: 0;
|
|
right: 0;
|
|
background-color: #A3A4FF;
|
|
}
|
|
|
|
/* You can use mixins to create a shorthand property. */
|
|
|
|
size($width, $height)
|
|
width $width
|
|
height $height
|
|
|
|
.rectangle
|
|
size(100px, 60px)
|
|
|
|
.square
|
|
size(40px, 40px)
|
|
|
|
/* You can use a mixin as a CSS property. */
|
|
circle($ratio)
|
|
width $ratio * 2
|
|
height $ratio * 2
|
|
border-radius $ratio
|
|
|
|
.ball
|
|
circle 25px
|
|
|
|
|
|
/* Interpolation
|
|
==============================*/
|
|
|
|
vendor(prop, args)
|
|
-webkit-{prop} args
|
|
-moz-{prop} args
|
|
{prop} args
|
|
|
|
border-radius()
|
|
vendor('border-radius', arguments)
|
|
|
|
box-shadow()
|
|
vendor('box-shadow', arguments)
|
|
|
|
button
|
|
border-radius 1px 2px / 3px 4px
|
|
|
|
|
|
/* Functions
|
|
==============================*/
|
|
|
|
/* Functions in Stylus allow you to perform a variety of tasks, such as recalling some data. */
|
|
|
|
body {
|
|
background darken(#0088DD, 50%) // Dim color #0088DD by 50%
|
|
}
|
|
|
|
/* Creating your own function */
|
|
add(a, b)
|
|
a + b
|
|
|
|
body
|
|
padding add(10px, 5)
|
|
|
|
|
|
/* Conditions
|
|
==============================*/
|
|
compare(a, b)
|
|
if a > b
|
|
bigger
|
|
else if a < b
|
|
smaller
|
|
else
|
|
equal
|
|
|
|
compare(5, 2) // => bigger
|
|
compare(1, 5) // => smaller
|
|
compare(10, 10) // => equal
|
|
|
|
|
|
/* Iterations
|
|
==============================*/
|
|
|
|
/*
|
|
Repeat loop syntax for:
|
|
for <val-name> [, <key-name>] in <expression>
|
|
*/
|
|
|
|
for $item in (1..2) /* Repeat block 12 times */
|
|
.col-{$item}
|
|
width ($item / 12) * 100% /* Calculate row by column number */
|
|
```
|
|
|
|
Now that you know a little about this powerful CSS preprocessor, you're ready to create more dynamic style sheets. To learn more, visit the official stylus documentation at [stylus-lang.com](https://stylus-lang.com).
|