Commit 348b7de7 authored by mrmrs's avatar mrmrs
Browse files

Break mixins.less up into smaller modules.

Move all deprecated vendor prefix mixins to less/mixins/vendor-prefixes.less
Create mixins directory and move partials to that directory.

FIXES #12994
parent 1a5fb4ef
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//
// Mixins // Mixins
// -------------------------------------------------- // --------------------------------------------------
// Table of Contents // Table of Contents
// // - Utilities
// Utilities // - Components
// - Clearfix // - Skins
// - WebKit-style focus // - Layout
// - Center-align a block level element
// - Sizing shortcuts
// - Placeholder text
// - Text overflow
// - Requires inline-block or block for proper styling
// - CSS image replacement
//
// CSS3 properties
// - Single side border-radius
// - Drop shadows
// - Transitions
// - Transformations
// - Animations
// - Backface visibility
// - Prevent browsers from flickering when using CSS 3D transforms.
// - Box sizing
// - User select
// - For selecting text on the page
// - Resize anything
// - CSS3 Content Columns
// - Optional hyphenation
// - Opacity
//
// Gradients
// - Reset filters for IE
// - Retina images
// - Responsive image
//
// Component mixins
// - Horizontal dividers
// - Dividers (basically an hr) within dropdowns and nav lists
// - Panels
// - Alerts
// - Tables
// - List Groups
// - Button variants
// - Button sizes
// - Pagination
// - Labels
// - Contextual backgrounds
// - Typography
// - Navbar vertical align
// - Vertically center elements in the navbar
// - Progress bars
//
// Responsive utilities
//
// Forms
// - Form control focus state
// - Form control sizing
//
// Grid system
// - Centered container element
// - Generate the extra small columns
// - Generate the small columns
// - Generate the medium columns
// - Generate the large columns
//
// Framework grid generation
// - Loop to generate grid all grid classes
// - Form validation states
// - Form control focus state
// Utilities // Utilities
// -------------------------------------------------- @import "mixins/hide-text.less";
@import "mixins/opacity.less";
// Clearfix @import "mixins/image.less";
// Source: http://nicolasgallagher.com/micro-clearfix-hack/ @import "mixins/labels.less";
// @import "mixins/reset-filter.less";
// For modern browsers @import "mixins/resize.less";
// 1. The space content is one way to avoid an Opera bug when the @import "mixins/responsive-visibility.less";
// contenteditable attribute is included anywhere else in the document. @import "mixins/size.less";
// Otherwise it causes space to appear at the top and bottom of elements @import "mixins/tab-focus.less";
// that are clearfixed. @import "mixins/text-emphasis.less";
// 2. The use of `table` rather than `block` is only necessary if using @import "mixins/text-overflow.less";
// `:before` to contain the top-margins of child elements. @import "mixins/vendor-prefixes.less";
.clearfix() {
&:before, // Components
&:after { @import "mixins/alerts.less";
content: " "; // 1 @import "mixins/buttons.less";
display: table; // 2 @import "mixins/panels.less";
} @import "mixins/pagination.less";
&:after { @import "mixins/list-group.less";
clear: both; @import "mixins/nav-divider.less";
} @import "mixins/forms.less";
} @import "mixins/progress-bar.less";
@import "mixins/table-row.less";
// WebKit-style focus
.tab-focus() { // Skins
// Default @import "mixins/background-variant.less";
outline: thin dotted; @import "mixins/border-radius.less";
// WebKit @import "mixins/gradients.less";
outline: 5px auto -webkit-focus-ring-color;
outline-offset: -2px; // Layout
} @import "mixins/clearfix.less";
@import "mixins/center-block.less";
// Center-align a block level element @import "mixins/nav-vertical-align.less";
.center-block() { @import "mixins/grid-framework.less";
display: block; @import "mixins/grid.less";
margin-left: auto;
margin-right: auto;
}
// Sizing shortcuts
.size(@width; @height) {
width: @width;
height: @height;
}
.square(@size) {
.size(@size; @size);
}
// Placeholder text
.placeholder(@color: @input-color-placeholder) {
&::-moz-placeholder { color: @color; // Firefox
opacity: 1; } // See https://github.com/twbs/bootstrap/pull/11526
&:-ms-input-placeholder { color: @color; } // Internet Explorer 10+
&::-webkit-input-placeholder { color: @color; } // Safari and Chrome
}
// Text overflow
// Requires inline-block or block for proper styling
.text-overflow() {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
// CSS image replacement
//
// Heads up! v3 launched with with only `.hide-text()`, but per our pattern for
// mixins being reused as classes with the same name, this doesn't hold up. As
// of v3.0.1 we have added `.text-hide()` and deprecated `.hide-text()`.
//
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
// Deprecated as of v3.0.1 (will be removed in v4)
.hide-text() {
font: ~"0/0" a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
// New mixin to use as of v3.0.1
.text-hide() {
.hide-text();
}
// CSS3 properties
// --------------------------------------------------
// Single side border-radius
.border-top-radius(@radius) {
border-top-right-radius: @radius;
border-top-left-radius: @radius;
}
.border-right-radius(@radius) {
border-bottom-right-radius: @radius;
border-top-right-radius: @radius;
}
.border-bottom-radius(@radius) {
border-bottom-right-radius: @radius;
border-bottom-left-radius: @radius;
}
.border-left-radius(@radius) {
border-bottom-left-radius: @radius;
border-top-left-radius: @radius;
}
// Drop shadows
//
// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
// supported browsers that have box shadow capabilities now support the
// standard `box-shadow` property.
.box-shadow(@shadow) {
-webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
box-shadow: @shadow;
}
// Transitions
//
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition(@transition) {
-webkit-transition: @transition;
-o-transition: @transition;
transition: @transition;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition-property(@transition-property) {
-webkit-transition-property: @transition-property;
transition-property: @transition-property;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition-delay(@transition-delay) {
-webkit-transition-delay: @transition-delay;
transition-delay: @transition-delay;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition-duration(@transition-duration) {
-webkit-transition-duration: @transition-duration;
transition-duration: @transition-duration;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition-timing-function(@timing-function) {
-webkit-transition-timing-function: @timing-function;
transition-timing-function: @timing-function;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transition-transform(@transition) {
-webkit-transition: -webkit-transform @transition;
-moz-transition: -moz-transform @transition;
-o-transition: -o-transform @transition;
transition: transform @transition;
}
// Transformations
//
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.scale(@ratio) {
-webkit-transform: scale(@ratio);
-ms-transform: scale(@ratio); // IE9 only
-o-transform: scale(@ratio);
transform: scale(@ratio);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.scale(@ratioX; @ratioY) {
-webkit-transform: scale(@ratioX, @ratioY);
-ms-transform: scale(@ratioX, @ratioY); // IE9 only
-o-transform: scale(@ratioX, @ratioY);
transform: scale(@ratioX, @ratioY);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.scaleX(@ratio) {
-webkit-transform: scaleX(@ratio);
-ms-transform: scaleX(@ratio); // IE9 only
-o-transform: scaleX(@ratio);
transform: scaleX(@ratio);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.scaleY(@ratio) {
-webkit-transform: scaleY(@ratio);
-ms-transform: scaleY(@ratio); // IE9 only
-o-transform: scaleY(@ratio);
transform: scaleY(@ratio);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.skew(@x; @y) {
-webkit-transform: skew(@x, @y);
-ms-transform: skewX(@x) skewY(@y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
-o-transform: skew(@x, @y);
transform: skew(@x, @y);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.translate(@x; @y) {
-webkit-transform: translate(@x, @y);
-ms-transform: translate(@x, @y); // IE9 only
-o-transform: translate(@x, @y);
transform: translate(@x, @y);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.translate3d(@x; @y; @z) {
-webkit-transform: translate3d(@x, @y, @z);
transform: translate3d(@x, @y, @z);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.rotate(@degrees) {
-webkit-transform: rotate(@degrees);
-ms-transform: rotate(@degrees); // IE9 only
-o-transform: rotate(@degrees);
transform: rotate(@degrees);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.rotateX(@degrees) {
-webkit-transform: rotateX(@degrees);
-ms-transform: rotateX(@degrees); // IE9 only
-o-transform: rotateX(@degrees);
transform: rotateX(@degrees);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.rotateY(@degrees) {
-webkit-transform: rotateY(@degrees);
-ms-transform: rotateY(@degrees); // IE9 only
-o-transform: rotateY(@degrees);
transform: rotateY(@degrees);
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.perspective(@perspective) {
-webkit-perspective: @perspective;
-moz-perspective: @perspective;
perspective: @perspective;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.perspective-origin(@perspective) {
-webkit-perspective-origin: @perspective;
-moz-perspective-origin: @perspective;
perspective-origin: @perspective;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.transform-origin(@origin) {
-webkit-transform-origin: @origin;
-moz-transform-origin: @origin;
-ms-transform-origin: @origin; // IE9 only
transform-origin: @origin;
}
// Animations
//
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation(@animation) {
-webkit-animation: @animation;
-o-animation: @animation;
animation: @animation;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-name(@name) {
-webkit-animation-name: @name;
animation-name: @name;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-duration(@duration) {
-webkit-animation-duration: @duration;
animation-duration: @duration;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-timing-function(@timing-function) {
-webkit-animation-timing-function: @timing-function;
animation-timing-function: @timing-function;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-delay(@delay) {
-webkit-animation-delay: @delay;
animation-delay: @delay;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-iteration-count(@iteration-count) {
-webkit-animation-iteration-count: @iteration-count;
animation-iteration-count: @iteration-count;
}
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.animation-direction(@direction) {
-webkit-animation-direction: @direction;
animation-direction: @direction;
}
.animation-fill-mode(@fill-mode) {
-webkit-animation-fill-mode: @fill-mode;
animation-fill-mode: @fill-mode;
}
// Backface visibility
// Prevent browsers from flickering when using CSS 3D transforms.
// Default value is `visible`, but can be changed to `hidden`
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.backface-visibility(@visibility){
-webkit-backface-visibility: @visibility;
-moz-backface-visibility: @visibility;
backface-visibility: @visibility;
}
// Box sizing
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.box-sizing(@boxmodel) {
-webkit-box-sizing: @boxmodel;
-moz-box-sizing: @boxmodel;
box-sizing: @boxmodel;
}
// User select
// For selecting text on the page
// Deprecated as of v3.2.0 due to the introduction of autoprefixer (will be removed in v4)
.user-select(@select) {
-webkit-user-select: @select;
-moz-user-select: @select;
-ms-user-select: @select; // IE10+
user-select: @select;
}
// Resize anything
.resizable(@direction) {
resize: @direction; // Options: horizontal, vertical, both
overflow: auto; // Safari fix
}
// CSS3 Content Columns
.content-columns(@column-count; @column-gap: @grid-gutter-width) {
-webkit-column-count: @column-count;
-moz-column-count: @column-count;
column-count: @column-count;
-webkit-column-gap: @column-gap;
-moz-column-gap: @column-gap;
column-gap: @column-gap;
}
// Optional hyphenation
.hyphens(@mode: auto) {
word-wrap: break-word;
-webkit-hyphens: @mode;
-moz-hyphens: @mode;
-ms-hyphens: @mode; // IE10+
-o-hyphens: @mode;
hyphens: @mode;
}
// Opacity
.opacity(@opacity) {
opacity: @opacity;
// IE8 filter
@opacity-ie: (@opacity * 100);
filter: ~"alpha(opacity=@{opacity-ie})";
}
// Gradients
// --------------------------------------------------
#gradient {
// Horizontal gradient, from left to right
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(left, color-stop(@start-color @start-percent), color-stop(@end-color @end-percent)); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Opera 12
background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
}
// Vertical gradient, from top to bottom
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent); // Opera 12
background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
}
.directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
background-repeat: repeat-x;
background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(@deg, @start-color, @end-color); // Opera 12
background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
}
.horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
background-image: -o-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
background-repeat: no-repeat;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
}
.vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-image: -o-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-repeat: no-repeat;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
}
.radial(@inner-color: #555; @outer-color: #333) {
background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
background-image: radial-gradient(circle, @inner-color, @outer-color);
background-repeat: no-repeat;
}
.striped(@color: rgba(255,255,255,.15); @angle: 45deg) {
background-image: -webkit-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
background-image: -o-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
background-image: linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
}
}
// Reset filters for IE
//
// When you need to remove a gradient background, do not forget to use this to reset
// the IE filter for IE9 and below.
.reset-filter() {
filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)"));
}
// Retina images
// --------------------------------------------------
// Short retina mixin for setting background-image and -size. Note that the
// spelling of `min--moz-device-pixel-ratio` is intentional.
.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {
background-image: url("@{file-1x}");
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-ratio: 2),
only screen and ( -o-min-device-pixel-ratio: 2/1),
only screen and ( min-device-pixel-ratio: 2),
only screen and ( min-resolution: 192dpi),
only screen and ( min-resolution: 2dppx) {
background-image: url("@{file-2x}");
background-size: @width-1x @height-1x;
}
}
// Responsive image
// --------------------------------------------------
// Keep images from scaling beyond the width of their parents.
.img-responsive(@display: block) {
display: @display;
max-width: 100%; // Part 1: Set a maximum relative to the parent
height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
}
// Component mixins
// --------------------------------------------------
// Horizontal dividers
//
// Dividers (basically an hr) within dropdowns and nav lists
.nav-divider(@color: #e5e5e5) {
height: 1px;
margin: ((@line-height-computed / 2) - 1) 0;
overflow: hidden;
background-color: @color;
}
// Panels
.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border) {
border-color: @border;
& > .panel-heading {
color: @heading-text-color;
background-color: @heading-bg-color;
border-color: @heading-border;
+ .panel-collapse > .panel-body {
border-top-color: @border;
}
}
& > .panel-footer {
+ .panel-collapse > .panel-body {
border-bottom-color: @border;
}
}
}
// Alerts
.alert-variant(@background; @border; @text-color) {
background-color: @background;
border-color: @border;
color: @text-color;
hr {
border-top-color: darken(@border, 5%);
}
.alert-link {
color: darken(@text-color, 10%);
}
}
// Tables
.table-row-variant(@state; @background) {
// Exact selectors below required to override `.table-striped` and prevent
// inheritance to nested tables.
.table > thead > tr,
.table > tbody > tr,
.table > tfoot > tr {
> td.@{state},
> th.@{state},
&.@{state} > td,
&.@{state} > th {
background-color: @background;
}
}
// Hover states for `.table-hover`
// Note: this is not available for cells or rows within `thead` or `tfoot`.
.table-hover > tbody > tr {
> td.@{state}:hover,
> th.@{state}:hover,
&.@{state}:hover > td,
&.@{state}:hover > th {
background-color: darken(@background, 5%);
}
}
}
// List Groups
.list-group-item-variant(@state; @background; @color) {
.list-group-item-@{state} {
color: @color;
background-color: @background;
a& {
color: @color;
.list-group-item-heading { color: inherit; }
&:hover,
&:focus {
color: @color;
background-color: darken(@background, 5%);
}
&.active,
&.active:hover,
&.active:focus {
color: #fff;
background-color: @color;
border-color: @color;
}
}
}
}
// Button variants
//
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
.button-variant(@color; @background; @border) {
color: @color;
background-color: @background;
border-color: @border;
&:hover,
&:focus,
&:active,
&.active,
.open .dropdown-toggle& {
color: @color;
background-color: darken(@background, 10%);
border-color: darken(@border, 12%);
}
&:active,
&.active,
.open .dropdown-toggle& {
background-image: none;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: @background;
border-color: @border;
}
}
.badge {
color: @background;
background-color: @color;
}
}
// Button sizes
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
}
// Pagination
.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @border-radius) {
> li {
> a,
> span {
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
}
&:first-child {
> a,
> span {
.border-left-radius(@border-radius);
}
}
&:last-child {
> a,
> span {
.border-right-radius(@border-radius);
}
}
}
}
// Labels
.label-variant(@color) {
background-color: @color;
&[href] {
&:hover,
&:focus {
background-color: darken(@color, 10%);
}
}
}
// Contextual backgrounds
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}
// Typography
.text-emphasis-variant(@color) {
color: @color;
a&:hover {
color: darken(@color, 10%);
}
}
// Navbar vertical align
//
// Vertically center elements in the navbar.
// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
.navbar-vertical-align(@element-height) {
margin-top: ((@navbar-height - @element-height) / 2);
margin-bottom: ((@navbar-height - @element-height) / 2);
}
// Progress bars
.progress-bar-variant(@color) {
background-color: @color;
.progress-striped & {
#gradient > .striped();
}
}
// Responsive utilities
//
// More easily include all the states for responsive-utilities.less.
.responsive-visibility() {
display: block !important;
table& { display: table; }
tr& { display: table-row !important; }
th&,
td& { display: table-cell !important; }
}
.responsive-invisibility() {
display: none !important;
}
// Form validation states
//
// Used in forms.less to generate the form validation CSS for warnings, errors,
// and successes.
.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
// Color the label and help text
.help-block,
.control-label,
.radio,
.checkbox,
.radio-inline,
.checkbox-inline {
color: @text-color;
}
// Set the border and box shadow on specific inputs to match
.form-control {
border-color: @border-color;
.box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
&:focus {
border-color: darken(@border-color, 10%);
@shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@border-color, 20%);
.box-shadow(@shadow);
}
}
// Set validation states also for addons
.input-group-addon {
color: @text-color;
border-color: @border-color;
background-color: @background-color;
}
// Optional feedback icon
.form-control-feedback {
color: @text-color;
}
}
// Forms
// --------------------------------------------------
// Form control focus state
//
// Generate a customized focus state and for any input with the specified color,
// which defaults to the `@input-focus-border` variable.
//
// We highly encourage you to not customize the default value, but instead use
// this to tweak colors on an as-needed basis. This aesthetic change is based on
// WebKit's default styles, but applicable to a wider range of browsers. Its
// usability and accessibility should be taken into account with any change.
//
// Example usage: change the default blue border and shadow to white for better
// contrast against a dark gray background.
.form-control-focus(@color: @input-border-focus) {
@color-rgba: rgba(red(@color), green(@color), blue(@color), .6);
&:focus {
border-color: @color;
outline: 0;
.box-shadow(~"inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}");
}
}
// Form control sizing
//
// Relative text size, padding, and border-radii changes for form controls. For
// horizontal sizing, wrap controls in the predefined grid classes. `<select>`
// element gets special love because it's special, and that's a fact!
.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
height: @input-height;
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
select& {
height: @input-height;
line-height: @input-height;
}
textarea&,
select[multiple]& {
height: auto;
}
}
// Grid system
// --------------------------------------------------
// Centered container element
.container-fixed() {
margin-right: auto;
margin-left: auto;
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
&:extend(.clearfix all);
}
// Creates a wrapper for a series of columns
.make-row(@gutter: @grid-gutter-width) {
margin-left: (@gutter / -2);
margin-right: (@gutter / -2);
&:extend(.clearfix all);
}
// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
float: left;
width: percentage((@columns / @grid-columns));
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
}
.make-xs-column-offset(@columns) {
margin-left: percentage((@columns / @grid-columns));
}
.make-xs-column-push(@columns) {
left: percentage((@columns / @grid-columns));
}
.make-xs-column-pull(@columns) {
right: percentage((@columns / @grid-columns));
}
// Generate the small columns
.make-sm-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-sm-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-sm-column-offset(@columns) {
@media (min-width: @screen-sm-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-push(@columns) {
@media (min-width: @screen-sm-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-pull(@columns) {
@media (min-width: @screen-sm-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-md-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-md-column-offset(@columns) {
@media (min-width: @screen-md-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-md-column-push(@columns) {
@media (min-width: @screen-md-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-md-column-pull(@columns) {
@media (min-width: @screen-md-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-lg-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-lg-column-offset(@columns) {
@media (min-width: @screen-lg-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-push(@columns) {
@media (min-width: @screen-lg-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-pull(@columns) {
@media (min-width: @screen-lg-min) {
right: percentage((@columns / @grid-columns));
}
}
// Framework grid generation
// --------------------------------------------------
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `@grid-columns`.
.make-grid-columns() {
// Common styles for all sizes of grid columns, widths 1-12
.col(@index) when (@index = 1) { // initial
@item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
@item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
.col((@index + 1), ~"@{list}, @{item}");
}
.col(@index, @list) when (@index > @grid-columns) { // terminal
@{list} {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
}
}
.col(1); // kickstart it
}
.float-grid-columns(@class) {
.col(@index) when (@index = 1) { // initial
@item: ~".col-@{class}-@{index}";
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) { // general
@item: ~".col-@{class}-@{index}";
.col((@index + 1), ~"@{list}, @{item}");
}
.col(@index, @list) when (@index > @grid-columns) { // terminal
@{list} {
float: left;
}
}
.col(1); // kickstart it
}
.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
.col-@{class}-@{index} {
width: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
.col-@{class}-push-@{index} {
left: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
.col-@{class}-push-0 {
left: auto;
}
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
.col-@{class}-pull-@{index} {
right: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
.col-@{class}-pull-0 {
right: auto;
}
}
.calc-grid-column(@index, @class, @type) when (@type = offset) {
.col-@{class}-offset-@{index} {
margin-left: percentage((@index / @grid-columns));
}
}
// Basic looping in LESS
.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
.calc-grid-column(@index, @class, @type);
// next iteration
.loop-grid-columns((@index - 1), @class, @type);
}
// Create grid for specific class
.make-grid(@class) {
.float-grid-columns(@class);
.loop-grid-columns(@grid-columns, @class, width);
.loop-grid-columns(@grid-columns, @class, pull);
.loop-grid-columns(@grid-columns, @class, push);
.loop-grid-columns(@grid-columns, @class, offset);
}
// Alerts
.alert-variant(@background; @border; @text-color) {
background-color: @background;
border-color: @border;
color: @text-color;
hr {
border-top-color: darken(@border, 5%);
}
.alert-link {
color: darken(@text-color, 10%);
}
}
// Contextual backgrounds
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}
// Single side border-radius
.border-top-radius(@radius) {
border-top-right-radius: @radius;
border-top-left-radius: @radius;
}
.border-right-radius(@radius) {
border-bottom-right-radius: @radius;
border-top-right-radius: @radius;
}
.border-bottom-radius(@radius) {
border-bottom-right-radius: @radius;
border-bottom-left-radius: @radius;
}
.border-left-radius(@radius) {
border-bottom-left-radius: @radius;
border-top-left-radius: @radius;
}
// Button variants
//
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
.button-variant(@color; @background; @border) {
color: @color;
background-color: @background;
border-color: @border;
&:hover,
&:focus,
&:active,
&.active,
.open .dropdown-toggle& {
color: @color;
background-color: darken(@background, 10%);
border-color: darken(@border, 12%);
}
&:active,
&.active,
.open .dropdown-toggle& {
background-image: none;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: @background;
border-color: @border;
}
}
.badge {
color: @background;
background-color: @color;
}
}
// Button sizes
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
}
// Center-align a block level element
.center-block() {
display: block;
margin-left: auto;
margin-right: auto;
}
// Clearfix
// Source: http://nicolasgallagher.com/micro-clearfix-hack/
//
// For modern browsers
// 1. The space content is one way to avoid an Opera bug when the
// contenteditable attribute is included anywhere else in the document.
// Otherwise it causes space to appear at the top and bottom of elements
// that are clearfixed.
// 2. The use of `table` rather than `block` is only necessary if using
// `:before` to contain the top-margins of child elements.
.clearfix() {
&:before,
&:after {
content: " "; // 1
display: table; // 2
}
&:after {
clear: both;
}
}
// Form validation states
//
// Used in forms.less to generate the form validation CSS for warnings, errors,
// and successes.
.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
// Color the label and help text
.help-block,
.control-label,
.radio,
.checkbox,
.radio-inline,
.checkbox-inline {
color: @text-color;
}
// Set the border and box shadow on specific inputs to match
.form-control {
border-color: @border-color;
.box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
&:focus {
border-color: darken(@border-color, 10%);
@shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@border-color, 20%);
.box-shadow(@shadow);
}
}
// Set validation states also for addons
.input-group-addon {
color: @text-color;
border-color: @border-color;
background-color: @background-color;
}
// Optional feedback icon
.form-control-feedback {
color: @text-color;
}
}
// Forms
// --------------------------------------------------
// Form control focus state
//
// Generate a customized focus state and for any input with the specified color,
// which defaults to the `@input-focus-border` variable.
//
// We highly encourage you to not customize the default value, but instead use
// this to tweak colors on an as-needed basis. This aesthetic change is based on
// WebKit's default styles, but applicable to a wider range of browsers. Its
// usability and accessibility should be taken into account with any change.
//
// Example usage: change the default blue border and shadow to white for better
// contrast against a dark gray background.
.form-control-focus(@color: @input-border-focus) {
@color-rgba: rgba(red(@color), green(@color), blue(@color), .6);
&:focus {
border-color: @color;
outline: 0;
.box-shadow(~"inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}");
}
}
// Form control sizing
//
// Relative text size, padding, and border-radii changes for form controls. For
// horizontal sizing, wrap controls in the predefined grid classes. `<select>`
// element gets special love because it's special, and that's a fact!
.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
height: @input-height;
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
select& {
height: @input-height;
line-height: @input-height;
}
textarea&,
select[multiple]& {
height: auto;
}
}
// Gradients
// --------------------------------------------------
#gradient {
// Horizontal gradient, from left to right
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(left, color-stop(@start-color @start-percent), color-stop(@end-color @end-percent)); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Opera 12
background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
}
// Vertical gradient, from top to bottom
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent); // Opera 12
background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
}
.directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
background-repeat: repeat-x;
background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1-6, Chrome 10+
background-image: -o-linear-gradient(@deg, @start-color, @end-color); // Opera 12
background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
}
.horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
background-image: -o-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
background-repeat: no-repeat;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
}
.vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-image: -o-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
background-repeat: no-repeat;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
}
.radial(@inner-color: #555; @outer-color: #333) {
background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
background-image: radial-gradient(circle, @inner-color, @outer-color);
background-repeat: no-repeat;
}
.striped(@color: rgba(255,255,255,.15); @angle: 45deg) {
background-image: -webkit-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
background-image: -o-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
background-image: linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
}
}
// Framework grid generation
// --------------------------------------------------
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `@grid-columns`.
.make-grid-columns() {
// Common styles for all sizes of grid columns, widths 1-12
.col(@index) when (@index = 1) { // initial
@item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
@item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
.col((@index + 1), ~"@{list}, @{item}");
}
.col(@index, @list) when (@index > @grid-columns) { // terminal
@{list} {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
}
}
.col(1); // kickstart it
}
.float-grid-columns(@class) {
.col(@index) when (@index = 1) { // initial
@item: ~".col-@{class}-@{index}";
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) { // general
@item: ~".col-@{class}-@{index}";
.col((@index + 1), ~"@{list}, @{item}");
}
.col(@index, @list) when (@index > @grid-columns) { // terminal
@{list} {
float: left;
}
}
.col(1); // kickstart it
}
.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
.col-@{class}-@{index} {
width: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
.col-@{class}-push-@{index} {
left: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
.col-@{class}-push-0 {
left: auto;
}
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
.col-@{class}-pull-@{index} {
right: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
.col-@{class}-pull-0 {
right: auto;
}
}
.calc-grid-column(@index, @class, @type) when (@type = offset) {
.col-@{class}-offset-@{index} {
margin-left: percentage((@index / @grid-columns));
}
}
// Basic looping in LESS
.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
.calc-grid-column(@index, @class, @type);
// next iteration
.loop-grid-columns((@index - 1), @class, @type);
}
// Create grid for specific class
.make-grid(@class) {
.float-grid-columns(@class);
.loop-grid-columns(@grid-columns, @class, width);
.loop-grid-columns(@grid-columns, @class, pull);
.loop-grid-columns(@grid-columns, @class, push);
.loop-grid-columns(@grid-columns, @class, offset);
}
// Grid system
// --------------------------------------------------
// Centered container element
.container-fixed() {
margin-right: auto;
margin-left: auto;
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
&:extend(.clearfix all);
}
// Creates a wrapper for a series of columns
.make-row(@gutter: @grid-gutter-width) {
margin-left: (@gutter / -2);
margin-right: (@gutter / -2);
&:extend(.clearfix all);
}
// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
float: left;
width: percentage((@columns / @grid-columns));
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
}
.make-xs-column-offset(@columns) {
margin-left: percentage((@columns / @grid-columns));
}
.make-xs-column-push(@columns) {
left: percentage((@columns / @grid-columns));
}
.make-xs-column-pull(@columns) {
right: percentage((@columns / @grid-columns));
}
// Generate the small columns
.make-sm-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-sm-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-sm-column-offset(@columns) {
@media (min-width: @screen-sm-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-push(@columns) {
@media (min-width: @screen-sm-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-pull(@columns) {
@media (min-width: @screen-sm-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-md-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-md-column-offset(@columns) {
@media (min-width: @screen-md-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-md-column-push(@columns) {
@media (min-width: @screen-md-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-md-column-pull(@columns) {
@media (min-width: @screen-md-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-lg-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-lg-column-offset(@columns) {
@media (min-width: @screen-lg-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-push(@columns) {
@media (min-width: @screen-lg-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-pull(@columns) {
@media (min-width: @screen-lg-min) {
right: percentage((@columns / @grid-columns));
}
}
// CSS image replacement
//
// Heads up! v3 launched with with only `.hide-text()`, but per our pattern for
// mixins being reused as classes with the same name, this doesn't hold up. As
// of v3.0.1 we have added `.text-hide()` and deprecated `.hide-text()`.
//
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
// Deprecated as of v3.0.1 (will be removed in v4)
.hide-text() {
font: ~"0/0" a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
// New mixin to use as of v3.0.1
.text-hide() {
.hide-text();
}
// Image Mixins
// - Responsive image
// - Retina image
// Responsive image
// --------------------------------------------------
// Keep images from scaling beyond the width of their parents.
.img-responsive(@display: block) {
display: @display;
max-width: 100%; // Part 1: Set a maximum relative to the parent
height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
}
// Retina image
// --------------------------------------------------
// Short retina mixin for setting background-image and -size. Note that the
// spelling of `min--moz-device-pixel-ratio` is intentional.
.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {
background-image: url("@{file-1x}");
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-ratio: 2),
only screen and ( -o-min-device-pixel-ratio: 2/1),
only screen and ( min-device-pixel-ratio: 2),
only screen and ( min-resolution: 192dpi),
only screen and ( min-resolution: 2dppx) {
background-image: url("@{file-2x}");
background-size: @width-1x @height-1x;
}
}
// Labels
.label-variant(@color) {
background-color: @color;
&[href] {
&:hover,
&:focus {
background-color: darken(@color, 10%);
}
}
}
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