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_mixins.scss

willans

Updates how heading typography scale works

c9b61b4 · Apr 17, 2018

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Media Query mixin

See https://github.com/sass-mq/sass-mq/ for original full version.

@example scss
	 .element {
	   @include mq($from: mobile) {
		 color: red;
	   }

@include mq($to: tablet) {
		 color: blue;
	   }

@include mq(mobile, tablet) {
		 color: green;
	   }

@include mq($from: tablet, $and: '(orientation: landscape)') {
		 color: teal;
	   }

@include mq(em(950px)) {
		 color: hotpink;
	   }

@include mq(em(950px), $media-feature: height) {
		 color: hotpink;
	   }

@include mq(tablet, $media-type: screen) {
		 color: hotpink;
	   }

// Advanced use:
	   $custom-breakpoints: (L: 900px, XL: 1200px);
	   @include mq(L, $bp: $custom-breakpoints) {
		 color: hotpink;
	   }
	 }

@mixin mq(
	$from: false,
	$to: false,
	$and: false,
	$media-feature: width,
	$media-type: all,
	$bp: $breakpoints
) {
	$min-width: 0;
	$max-width: 0;
	$media-query: '';

// From: this breakpoint (inclusive)
	@if $from {
		@if type-of($from) == number {
			$min-width: $from;
		} @else {
			$min-width: map_get($bp, $from);
		}
	}

// Until: that breakpoint (exclusive)
	@if $to {
		@if type-of($to) == number {
			$max-width: $to;
		} @else {
			$negative: if($em-media-queries, 0.01em, 1px);
			$max-width: map_get($bp, $to) - $negative;
		}
	}

@if $media-feature {
		@if $min-width != 0 { $media-query: '#{$media-query} and (min-#{$media-feature}: #{$min-width})'; }
		@if $max-width != 0 { $media-query: '#{$media-query} and (max-#{$media-feature}: #{$max-width})'; }
	}

@if $and {
		$media-query: '#{$media-query} and #{$and}';
	}

// Remove unnecessary media query prefix 'all and '
	@if ($media-type == 'all' and $media-query != '') {
		$media-type: '';
		$media-query: str-slice(unquote($media-query), 6);
	}

@media #{$media-type + $media-query} {
		@content;
	}
}

Margin / Padding Quick Resets

example: top & bottom margin set to $spacing-unit
	.element {
		@include push--ends;
	}

example: left & right padding set to $spacing-unit--small
	.element {
		@include soft--sides($spacing-unit--small);
	}

// add/remove margins
@mixin push--ends($spacing: $spacing-unit) { margin: { top: $spacing; bottom: $spacing; } }
@mixin push--sides($spacing: $spacing-unit) { margin: { left: $spacing; right: $spacing; } }
@mixin push--auto { margin: { left: auto; right: auto; } }
@mixin offset--sides($spacing: $spacing-unit) { margin: { left: -$spacing; right: -$spacing; } }
@mixin flush--ends { margin: { top: 0; bottom: 0; } }
@mixin flush--sides { margin: { left: 0; right: 0; } }

// add/remove paddings
@mixin soft--ends($spacing: $spacing-unit) { padding: { top: $spacing; bottom: $spacing; } }
@mixin soft--sides($spacing: $spacing-unit) { padding: { left: $spacing; right: $spacing; } }
@mixin hard--ends { padding: { top: 0; bottom: 0; } }
@mixin hard--sides { padding: { left: 0; right: 0; } }

Helper mixins

// Contain floats / clearfix
@mixin cf {

&::after {
		content: '';
		display: table;
		clear: both;
	}
}

// Hide from both screenreaders and browsers
@mixin hidden {
	display: none;
	visibility: hidden;
}

@mixin visible($state: 'block') {
	display: unquote($state);
	visibility: visible;
}

// Hide only visually, but have it available for screenreaders
@mixin vh($focusable: false) {
	border: 0;
	clip: rect(0 0 0 0);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;

@if $focusable {
		@include vh-focusable;
	}
}

@mixin vh-reset {
	clip: auto;
	height: auto;
	margin: 0;
	overflow: visible;
	position: static;
	width: auto;
}

// Allow the element to be focusable when navigated to via the keyboard
@mixin vh-focusable {
	&:active,
	&:focus {
		clip: auto;
		height: auto;
		margin: 0;
		overflow: visible;
		position: static;
		width: auto;
	}
}

// Hide visually and from screenreaders, but maintain layout
@mixin invisible {
	visibility: hidden;
}

Form input placeholder text

example:

input,
	textarea {
		@include input-placeholder {
			color: $grey;
		}
	}

@mixin input-placeholder {
	&.placeholder { @content; }
	&:-moz-placeholder { @content; }
	&::-moz-placeholder { @content; }
	&:-ms-input-placeholder { @content; }
	&::-webkit-input-placeholder { @content; }
}

Retina images

example:

.element {
		@include retina {
			background-image: url(../img/background@2x.png);
		}
	}

@mixin retina {
	@media only screen and (-webkit-min-device-pixel-ratio: 1.5),
	only screen and (-moz-min-device-pixel-ratio: 1.5),
	only screen and (-o-min-device-pixel-ratio: 3 / 2),
	only screen and (min-device-pixel-ratio: 1.5),
	only screen and (min-resolution: 1.5dppx) {
		@content;
	}
}

Content margins

fore removing first/last child margins

example: default
	.element {
		@include content-margins;
	}

output:
	.element > *:first-child {
		margin-top: 0;
	}
	.element > *:last-child {
		margin-bottom: 0;
	}

example: empty selector
	.element {
		@include content-margins('false');
	}

output:
	.element:first-child {
		margin-top: 0;
	}
	.element:last-child {
		margin-bottom: 0;
	}

@mixin content-margins($selector: '> *', $last-child: false) {
	@if not $selector {
		$selector: '&';
	}

#{unquote($selector)} {
		&:first-child { margin-top: 0; }
		@if $last-child {
			&:last-child { margin-bottom: 0; }
		}
	}
}

CSS Triangle

used for creating CSS only triangles

example:
	.element {

&::before {
			@include css-triangle(blue, down);
		}
	}

@mixin css-triangle($color, $direction, $size: 6px, $position: absolute, $round: false){
	@include pseudo($pos: $position);
	width: 0;
	height: 0;

@if $round {
		border-radius: 3px;
	}

@if $direction == down {
		border-left: $size solid transparent;
		border-right: $size solid transparent;
		border-top: $size solid $color;
		margin-top: 0 - round( $size / 2.5 );
	} @else if $direction == up {
		border-left: $size solid transparent;
		border-right: $size solid transparent;
		border-bottom: $size solid $color;
		margin-bottom: 0 - round( $size / 2.5 );
	} @else if $direction == right {
		border-top: $size solid transparent;
		border-bottom: $size solid transparent;
		border-left: $size solid $color;
		margin-right: -$size;
	} @else if  $direction == left {
		border-top: $size solid transparent;
		border-bottom: $size solid transparent;
		border-right: $size solid $color;
		margin-left: -$size;
	}
}

Hide text

example:

.element {
		@include hide-text;
	}

@mixin hide-text($break: false, $indent: 200%, $align: left, $overflow: hidden) {
	@if $break {
		position: absolute;
		top: 0; left: 0;
		pointer-events: none;
	}
	text: {
		indent: $indent;
		align: $align;
	}
	font-size: 0;
	white-space: nowrap;
	@if $overflow {
		overflow: $overflow;
	}
}

Responsive ratio

Used for creating scalable elements that maintain the same ratio

example:
	.element {
		@include responsive-ratio(400, 300);
	}

@mixin responsive-ratio($x,$y, $pseudo: false) {
	$padding: unquote( ( $y / $x ) * 100 + '%' );

@if $pseudo {
		&::before {
			@include pseudo($pos: relative);
			width: 100%;
			padding-top: $padding;
		}
	} @else {
		padding-top: $padding;
	}
}

Typography

Text image replacement, with responsive ratio

HTML:

<h1 class="element">
		<span>Text to replace</span>
	</h1>

example:
	.element {
		@include typography(200, 50, 'hello-world');
	}

@mixin typography($w, $h, $file, $type: png, $overflow: hidden) {
	@include responsive-ratio($w, $h, true);
	position: relative;
	max-width: $w * 1px;
	background: url('/assets/img/typography/#{$file}.#{$type}') 50% 50% no-repeat;
	background-size: contain;

span {
		@include hide-text(true, $overflow: $overflow);
	}
}

Icon

For using fontastic icons in pseudo elements

@mixin icon-css($content: false) {
	@if $content {
		content: '#{$content}';
	}
	display: block;
	font-family: 'icon-font-family' !important;
	font-style: normal !important;
	font-weight: normal !important;
	font-variant: normal !important;
	text-transform: none !important;
	speak: none;
	line-height: 1;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

Colours

background, colour, etc. match up with colour map in _variables.scss

modify to suit per project

@mixin colours(
	$selector: false,
	$chain: '&--',
	$background: 'base',
	$border: true
) {

@each $name, $values in $colours {
		#{$chain}#{$name} {

@if $selector {

#{$selector} {
					@if $background {
						background-color: map-get($values, $background);
						@if $border {
							border-color: darken(map-get($values, $background), 20%);
						}
					}
				}

} @else {

@if $background {
					background-color: map-get($values, $background);
				}

}
		}

}

Fluid Property

http://www.adrenalinmedia.com.au/the-agency/insights/this-changes-everything-css-fluid-properties.aspx

HTML:

<h1 class="element">
		<span>Text to replace</span>
	</h1>

example:
	h1 {
		@include fp(font-size, 50, 100); // 50px at 320, 100px at 1920;
	}

output:
	h1 {
		font-size: calc(3.125vw + 40px); //This is the magic!
	}

@media (max-width:320px){ //Clips the start to the min value
		font-size:50px;
	}

@media (min-width:1920px){ //Clips the end to the max value
		font-size:100px;
	}

@mixin fp($property, $min, $max, $start: 320, $end: breakpoint('desktop'), $clip: true, $clipAtStart: true, $clipAtEnd: true) {
	$start: $start / ($start * 0 + 1);
	$end: $end / ($end * 0 + 1);
	$multiplier: ($max - $min) / ($end - $start) * 100;
	$adder: ($min * $end - $max * $start) / ($end - $start);
	$formula: calc(#{$multiplier + 0vw} + #{$adder + 0px});
	@if $clip and $clipAtStart {
		@media (max-width: #{$start + 0px}) {
			#{$property}: $min + 0px;
		}
	}
	@if $clip and $clipAtEnd {
		@media (min-width: #{$end + 0px}) {
			#{$property}: $max + 0px;
		}
	}
	#{$property}: $formula;
}

Misc

@mixin align($vertical: true, $horizontal: false, $position: relative) {
	@if $position {
		position: $position;
	}
	@if $vertical {
		top: 50%;
	}
	@if $horizontal {
		left: 50%;
	}

@if $vertical and $horizontal {
		transform: translateX(-50%) translateY(-50%);
	} @else if $vertical {
		transform: translateY(-50%);
	} @else {
		transform: translateX(-50%);
	}
}

@mixin antialias {
	font-smoothing: antialiased;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

@mixin appearance($val: none) {
	-webkit-appearance: $val;
	-moz-appearance: $val;
	appearance: $val;
}

@mixin font-size($sizes) {
	@each $breakpoint, $size in $sizes {
		@if $breakpoint == base {
			font-size: $size;
		} @else {
			@include mq($breakpoint) {
				font-size: $size;
			}
		}
	}
}

@mixin hardware($backface: true, $perspective: 1000) {

@if $backface {
		backface-visibility: hidden;
	}

perspective: $perspective;
}

@mixin pos($pos, $t, $r, $b, $l, $z: false, $hardware: true) {
	@if $pos == fixed and $hardware { @include hardware; }
	@if $pos { position: $pos; }
	@if $t { top: $t; }
	@if $r { right: $r; }
	@if $b { bottom: $b; }
	@if $l { left: $l; }
	@if $z { z-index: $z; }
}

@mixin pseudo($display: block, $pos: absolute, $content: ''){
	content: $content;
	display: $display;
	position: $pos;
}

@mixin selection {
	::-moz-selection { @content; }
	::selection { @content; }
}

@mixin truncate($truncation-boundary) {
	max-width: $truncation-boundary;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

@mixin unlist($margin: true, $padding: true) {
	@if $margin {
		@if $margin == 'vertical' {
			@include flush--ends;
		} @elseif $margin == 'horizontal' {
			@include flush--sides;
		} @else {
			margin: 0;
		}
	}
	@if $padding {
		padding: 0;
	}
	list-style: none;
}

@mixin unselectable {
	-webkit-touch-callout: none;
	user-select: none;
}

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Media Query mixin

See https://github.com/sass-mq/sass-mq/ for original full version.

@example scss

.element {

@include mq($from: mobile) {

color: red;

}

@include mq($to: tablet) {

color: blue;

}

@include mq(mobile, tablet) {

color: green;

}

@include mq($from: tablet, $and: '(orientation: landscape)') {

color: teal;

}

@include mq(em(950px)) {

color: hotpink;

}

@include mq(em(950px), $media-feature: height) {

color: hotpink;

}

@include mq(tablet, $media-type: screen) {

color: hotpink;

}

// Advanced use:

$custom-breakpoints: (L: 900px, XL: 1200px);

@include mq(L, $bp: $custom-breakpoints) {

color: hotpink;

}

@mixin mq(

$from: false,

$to: false,

$and: false,

$media-feature: width,

$media-type: all,

$bp: $breakpoints

) {

$min-width: 0;

$max-width: 0;

$media-query: '';

// From: this breakpoint (inclusive)

@if $from {

@if type-of($from) == number {

$min-width: $from;

} @else {

$min-width: map_get($bp, $from);

}

// Until: that breakpoint (exclusive)

@if $to {

@if type-of($to) == number {

$max-width: $to;

} @else {

$negative: if($em-media-queries, 0.01em, 1px);

$max-width: map_get($bp, $to) - $negative;

}

@if $media-feature {

@if $min-width != 0 { $media-query: '#{$media-query} and (min-#{$media-feature}: #{$min-width})'; }

@if $max-width != 0 { $media-query: '#{$media-query} and (max-#{$media-feature}: #{$max-width})'; }

}

@if $and {

$media-query: '#{$media-query} and #{$and}';

}

// Remove unnecessary media query prefix 'all and '

@if ($media-type == 'all' and $media-query != '') {

$media-type: '';

$media-query: str-slice(unquote($media-query), 6);

}

@media #{$media-type + $media-query} {

@content;

}

Margin / Padding Quick Resets

example: top & bottom margin set to $spacing-unit

.element {

@include push--ends;

}

example: left & right padding set to $spacing-unit--small

.element {

@include soft--sides($spacing-unit--small);

}

// add/remove margins

@mixin push--ends($spacing: $spacing-unit) { margin: { top: $spacing; bottom: $spacing; } }

@mixin push--sides($spacing: $spacing-unit) { margin: { left: $spacing; right: $spacing; } }

@mixin push--auto { margin: { left: auto; right: auto; } }

@mixin offset--sides($spacing: $spacing-unit) { margin: { left: -$spacing; right: -$spacing; } }

@mixin flush--ends { margin: { top: 0; bottom: 0; } }

@mixin flush--sides { margin: { left: 0; right: 0; } }

// add/remove paddings

@mixin soft--ends($spacing: $spacing-unit) { padding: { top: $spacing; bottom: $spacing; } }

@mixin soft--sides($spacing: $spacing-unit) { padding: { left: $spacing; right: $spacing; } }

@mixin hard--ends { padding: { top: 0; bottom: 0; } }

@mixin hard--sides { padding: { left: 0; right: 0; } }

Helper mixins

// Contain floats / clearfix

@mixin cf {

&::after {

content: '';

display: table;

clear: both;

}

// Hide from both screenreaders and browsers

@mixin hidden {

display: none;

visibility: hidden;

}

@mixin visible($state: 'block') {

display: unquote($state);

visibility: visible;

}

// Hide only visually, but have it available for screenreaders

@mixin vh($focusable: false) {

border: 0;

clip: rect(0 0 0 0);

height: 1px;

margin: -1px;

overflow: hidden;

padding: 0;

position: absolute;

width: 1px;

@if $focusable {

@include vh-focusable;

}

@mixin vh-reset {

clip: auto;

height: auto;

margin: 0;

overflow: visible;

position: static;

width: auto;

}

// Allow the element to be focusable when navigated to via the keyboard

@mixin vh-focusable {

&:active,

&:focus {

clip: auto;

height: auto;

margin: 0;

overflow: visible;

position: static;

width: auto;

}

// Hide visually and from screenreaders, but maintain layout

@mixin invisible {

visibility: hidden;

}

Form input placeholder text

example:

input,

textarea {

@include input-placeholder {

color: $grey;

}

@mixin input-placeholder {

&.placeholder { @content; }

&:-moz-placeholder { @content; }

&::-moz-placeholder { @content; }

&:-ms-input-placeholder { @content; }

&::-webkit-input-placeholder { @content; }

}

Retina images

example:

.element {

@include retina {

background-image: url(../img/background@2x.png);

}

@mixin retina {

@media only screen and (-webkit-min-device-pixel-ratio: 1.5),

only screen and (-moz-min-device-pixel-ratio: 1.5),

only screen and (-o-min-device-pixel-ratio: 3 / 2),

only screen and (min-device-pixel-ratio: 1.5),

only screen and (min-resolution: 1.5dppx) {

@content;

}

Content margins

fore removing first/last child margins

example: default

.element {

@include content-margins;

}

output:

.element > *:first-child {

margin-top: 0;

}

.element > *:last-child {

margin-bottom: 0;

}

example: empty selector

.element {

@include content-margins('false');

}

output:

.element:first-child {

margin-top: 0;

}

.element:last-child {

margin-bottom: 0;

}

@mixin content-margins($selector: '> *', $last-child: false) {

@if not $selector {

$selector: '&';

}

#{unquote($selector)} {

&:first-child { margin-top: 0; }

@if $last-child {

&:last-child { margin-bottom: 0; }

}

CSS Triangle

used for creating CSS only triangles

example:

.element {

&::before {

@include css-triangle(blue, down);

}

@mixin css-triangle($color, $direction, $size: 6px, $position: absolute, $round: false){

@include pseudo($pos: $position);

width: 0;

height: 0;

@if $round {

border-radius: 3px;

}

@if $direction == down {

border-left: $size solid transparent;

border-right: $size solid transparent;

border-top: $size solid $color;

margin-top: 0 - round( $size / 2.5 );

} @else if $direction == up {

border-left: $size solid transparent;

border-right: $size solid transparent;

border-bottom: $size solid $color;

margin-bottom: 0 - round( $size / 2.5 );

} @else if $direction == right {

border-top: $size solid transparent;

border-bottom: $size solid transparent;

border-left: $size solid $color;

margin-right: -$size;

} @else if $direction == left {

border-top: $size solid transparent;

border-bottom: $size solid transparent;

border-right: $size solid $color;

margin-left: -$size;

}

Hide text

example:

.element {

@include hide-text;

}

@mixin hide-text($break: false, $indent: 200%, $align: left, $overflow: hidden) {

@if $break {

position: absolute;

top: 0; left: 0;

pointer-events: none;

}

text: {

indent: $indent;

align: $align;

}

font-size: 0;

white-space: nowrap;

@if $overflow {

overflow: $overflow;

}

Responsive ratio

Used for creating scalable elements that maintain the same ratio

example:

.element {

@include responsive-ratio(400, 300);

}

@mixin responsive-ratio($x,$y, $pseudo: false) {

$padding: unquote( ( $y / $x ) * 100 + '%' );

@if $pseudo {

&::before {

@include pseudo($pos: relative);

width: 100%;

padding-top: $padding;

}

} @else {

padding-top: $padding;

}

Typography

Text image replacement, with responsive ratio

HTML:

<span>Text to replace</span>

</h1>

example:

.element {

@include typography(200, 50, 'hello-world');

}

@mixin typography($w, $h, $file, $type: png, $overflow: hidden) {

@include responsive-ratio($w, $h, true);

position: relative;

max-width: $w * 1px;

background: url('/assets/img/typography/#{$file}.#{$type}') 50% 50% no-repeat;

background-size: contain;

span {

@include hide-text(true, $overflow: $overflow);

}

Icon

For using fontastic icons in pseudo elements

@mixin icon-css($content: false) {

@if $content {

content: '#{$content}';

}

display: block;

font-family: 'icon-font-family' !important;

font-style: normal !important;

font-weight: normal !important;

font-variant: normal !important;

text-transform: none !important;

speak: none;

line-height: 1;

-webkit-font-smoothing: antialiased;

-moz-osx-font-smoothing: grayscale;

}

Colours

background, colour, etc. match up with colour map in _variables.scss

modify to suit per project

@mixin colours(

$selector: false,

$chain: '&--',

$background: 'base',

$border: true

) {

@each $name, $values in $colours {

#{$chain}#{$name} {

@if $selector {

#{$selector} {

@if $background {

background-color: map-get($values, $background);

@if $border {

border-color: darken(map-get($values, $background), 20%);

}

} @else {

@if $background {

background-color: map-get($values, $background);

}

Fluid Property

http://www.adrenalinmedia.com.au/the-agency/insights/this-changes-everything-css-fluid-properties.aspx

HTML:

<span>Text to replace</span>

</h1>

example:

h1 {

@include fp(font-size, 50, 100); // 50px at 320, 100px at 1920;

}

output:

h1 {

font-size: calc(3.125vw + 40px); //This is the magic!

}

@media (max-width:320px){ //Clips the start to the min value

font-size:50px;

}

@media (min-width:1920px){ //Clips the end to the max value

font-size:100px;

}

@mixin fp($property, $min, $max, $start: 320, $end: breakpoint('desktop'), $clip: true, $clipAtStart: true, $clipAtEnd: true) {

$start: $start / ($start * 0 + 1);

$end: $end / ($end * 0 + 1);

$multiplier: ($max - $min) / ($end - $start) * 100;

$adder: ($min * $end - $max * $start) / ($end - $start);

$formula: calc(#{$multiplier + 0vw} + #{$adder + 0px});

@if $clip and $clipAtStart {

@media (max-width: #{$start + 0px}) {

#{$property}: $min + 0px;

}

@if $clip and $clipAtEnd {

@media (min-width: #{$end + 0px}) {

#{$property}: $max + 0px;

}

#{$property}: $formula;

}

Misc

@mixin align($vertical: true, $horizontal: false, $position: relative) {

@if $position {

position: $position;

}

@if $vertical {

top: 50%;

}

@if $horizontal {

left: 50%;

}

@if $vertical and $horizontal {

transform: translateX(-50%) translateY(-50%);

} @else if $vertical {

transform: translateY(-50%);

} @else {

transform: translateX(-50%);

}

@mixin antialias {

font-smoothing: antialiased;

-webkit-font-smoothing: antialiased;

-moz-osx-font-smoothing: grayscale;

}

@mixin appearance($val: none) {

-webkit-appearance: $val;

-moz-appearance: $val;

appearance: $val;

}

@mixin font-size($sizes) {

@each $breakpoint, $size in $sizes {

@if $breakpoint == base {

font-size: $size;

} @else {

@include mq($breakpoint) {

font-size: $size;

}

@mixin hardware($backface: true, $perspective: 1000) {

@if $backface {

backface-visibility: hidden;

}

perspective: $perspective;

}

@mixin pos($pos, $t, $r, $b, $l, $z: false, $hardware: true) {

@if $pos == fixed and $hardware { @include hardware; }

@if $pos { position: $pos; }

@if $t { top: $t; }

@if $r { right: $r; }

@if $b { bottom: $b; }

@if $l { left: $l; }

@if $z { z-index: $z; }

}

@mixin pseudo($display: block, $pos: absolute, $content: ''){

content: $content;

display: $display;

position: $pos;

}

@mixin selection {

::-moz-selection { @content; }

::selection { @content; }

}

@mixin truncate($truncation-boundary) {

max-width: $truncation-boundary;

white-space: nowrap;

overflow: hidden;

text-overflow: ellipsis;

}

@mixin unlist($margin: true, $padding: true) {

@if $margin {

@if $margin == 'vertical' {

@include flush--ends;

} @elseif $margin == 'horizontal' {

@include flush--sides;

} @else {

margin: 0;

}

@if $padding {

padding: 0;

}

list-style: none;

}

@mixin unselectable {

-webkit-touch-callout: none;

user-select: none;

}

Files

_mixins.scss

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