//
// Mixins
// --------------------------------------------------
// Utilities
// -------------------------
// 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.
@mixin clearfix() {
&:before,
&:after {
content: " "; /* 1 */
display: table; /* 2 */
}
&:after {
clear: both;
}
}
// Webkit-style focus
@mixin tab-focus() {
// Default
outline: thin dotted #333;
// Webkit
outline: 5px auto -webkit-focus-ring-color;
outline-offset: -2px;
}
// Center-align a block level element
@mixin center-block() {
display: block;
margin-left: auto;
margin-right: auto;
}
// Sizing shortcuts
@mixin size($width, $height) {
width: $width;
height: $height;
}
@mixin square($size) {
@include size($size, $size);
}
// Placeholder text
@mixin placeholder($color: $input-color-placeholder) {
&:-moz-placeholder { color: $color; } // Firefox 4-18
&::-moz-placeholder { color: $color; } // Firefox 19+
&:-ms-input-placeholder { color: $color; } // Internet Explorer 10+
&::-webkit-input-placeholder { color: $color; } // Safari and Chrome
}
// Text overflow
// Requires inline-block or block for proper styling
@mixin text-overflow() {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
// CSS image replacement
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
@mixin hide-text() {
font: #{0/0} a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
// CSS3 PROPERTIES
// --------------------------------------------------
// Single side border-radius
@mixin border-top-radius($radius) {
border-top-right-radius: $radius;
border-top-left-radius: $radius;
}
@mixin border-right-radius($radius) {
border-bottom-right-radius: $radius;
border-top-right-radius: $radius;
}
@mixin border-bottom-radius($radius) {
border-bottom-right-radius: $radius;
border-bottom-left-radius: $radius;
}
@mixin border-left-radius($radius) {
border-bottom-left-radius: $radius;
border-top-left-radius: $radius;
}
// Drop shadows
@mixin box-shadow($shadow...) {
-webkit-box-shadow: $shadow; // iOS <4.3 & Android <4.1
box-shadow: $shadow;
}
// Transitions
@mixin transition($transition...) {
-webkit-transition: $transition;
transition: $transition;
}
@mixin transition-delay($transition-delay) {
-webkit-transition-delay: $transition-delay;
transition-delay: $transition-delay;
}
@mixin transition-duration($transition-duration) {
-webkit-transition-duration: $transition-duration;
transition-duration: $transition-duration;
}
@mixin transition-transform($transition...) {
-webkit-transition: -webkit-transform $transition;
-moz-transition: -moz-transform $transition;
-o-transition: -o-transform $transition;
transition: transform $transition;
}
// Transformations
@mixin rotate($degrees) {
-webkit-transform: rotate($degrees);
-ms-transform: rotate($degrees); // IE9+
transform: rotate($degrees);
}
@mixin scale($ratio) {
-webkit-transform: scale($ratio);
-ms-transform: scale($ratio); // IE9+
transform: scale($ratio);
}
@mixin translate($x, $y) {
-webkit-transform: translate($x, $y);
-ms-transform: translate($x, $y); // IE9+
transform: translate($x, $y);
}
@mixin skew($x, $y) {
-webkit-transform: skew($x, $y);
-ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
transform: skew($x, $y);
}
@mixin translate3d($x, $y, $z) {
-webkit-transform: translate3d($x, $y, $z);
transform: translate3d($x, $y, $z);
}
// Backface visibility
// Prevent browsers from flickering when using CSS 3D transforms.
// Default value is `visible`, but can be changed to `hidden`
// See git pull https://github.com/dannykeane/bootstrap.git backface-visibility for examples
@mixin backface-visibility($visibility){
-webkit-backface-visibility: $visibility;
-moz-backface-visibility: $visibility;
backface-visibility: $visibility;
}
// Box sizing
@mixin box-sizing($boxmodel) {
-webkit-box-sizing: $boxmodel;
-moz-box-sizing: $boxmodel;
box-sizing: $boxmodel;
}
// User select
// For selecting text on the page
@mixin user-select($select) {
-webkit-user-select: $select;
-moz-user-select: $select;
-ms-user-select: $select; // IE10+
-o-user-select: $select;
user-select: $select;
}
// Resize anything
@mixin resizable($direction) {
resize: $direction; // Options: horizontal, vertical, both
overflow: auto; // Safari fix
}
// CSS3 Content Columns
@mixin content-columns($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: $column-gap;
}
// Optional hyphenation
@mixin hyphens($mode: auto) {
word-wrap: break-word;
-webkit-hyphens: $mode;
-moz-hyphens: $mode;
-ms-hyphens: $mode; // IE10+
-o-hyphens: $mode;
hyphens: $mode;
}
// Opacity
@mixin opacity($opacity) {
opacity: $opacity;
// IE8 filter
$opacity-ie: ($opacity * 100);
filter: #{alpha(opacity=$opacity-ie)};
}
// GRADIENTS
// --------------------------------------------------
// Horizontal gradient, from left to right
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
@mixin gradient-horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
background-image: -webkit-gradient(linear, $start-percent top, $end-percent top, from($start-color), to($end-color)); // Safari 4+, Chrome 2+
background-image: -webkit-linear-gradient(left, color-stop($start-color $start-percent), color-stop($end-color $end-percent)); // Safari 5.1+, Chrome 10+
background-image: -moz-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // FF 3.6+
background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10
background-repeat: repeat-x;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down
}
// Vertical gradient, from top to bottom
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
@mixin gradient-vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
background-image: -webkit-gradient(linear, left $start-percent, left $end-percent, from($start-color), to($end-color)); // Safari 4+, Chrome 2+
background-image: -webkit-linear-gradient(top, $start-color, $start-percent, $end-color, $end-percent); // Safari 5.1+, Chrome 10+
background-image: -moz-linear-gradient(top, $start-color $start-percent, $end-color $end-percent); // FF 3.6+
background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10
background-repeat: repeat-x;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down
}
@mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {
background-repeat: repeat-x;
background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1+, Chrome 10+
background-image: -moz-linear-gradient($deg, $start-color, $end-color); // FF 3.6+
background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10
}
@mixin gradient-horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color));
background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
background-image: -moz-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
background-repeat: no-repeat;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback
}
@mixin gradient-vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
background-image: -webkit-gradient(linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color));
background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color);
background-image: -moz-linear-gradient(top, $start-color, $mid-color $color-stop, $end-color);
background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
background-repeat: no-repeat;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback
}
@mixin gradient-radial($inner-color: #555, $outer-color: #333) {
background-image: -webkit-gradient(radial, center center, 0, center center, 460, from($inner-color), to($outer-color));
background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color);
background-image: -moz-radial-gradient(circle, $inner-color, $outer-color);
background-image: radial-gradient(circle, $inner-color, $outer-color);
background-repeat: no-repeat;
}
@mixin gradient-striped($color: #555, $angle: 45deg) {
background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent));
background-image: -webkit-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
background-image: -moz-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
background-image: linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 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.
@mixin reset-filter() {
filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
}
// Retina images
//
// Short retina mixin for setting background-image and -size
@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
background-image: image-url("#{$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: image-url("#{$file-2x}");
background-size: $width-1x $height-1x;
}
}
// Responsive image
//
// Keep images from scaling beyond the width of their parents.
@mixin img-responsive($display: block) {
display: $display;
max-width: 100%; // Part 1: Set a maximum relative to the parent
height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
}
// COMPONENT MIXINS
// --------------------------------------------------
// Horizontal dividers
// -------------------------
// Dividers (basically an hr) within dropdowns and nav lists
@mixin nav-divider($color: #e5e5e5) {
height: 1px;
margin: (($line-height-computed / 2) - 1) 0;
overflow: hidden;
background-color: $color;
}
// Panels
// -------------------------
@mixin panel-variant($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: $border;
}
}
}
// Alerts
// -------------------------
@mixin alert-variant($background, $border, $text-color) {
background-color: $background;
border-color: $border;
color: $text-color;
hr {
border-top-color: darken($border, 5%);
}
.alert-link {
color: darken($text-color, 10%);
}
}
// Tables
// -------------------------
@mixin table-row-variant($state, $background, $border) {
// Exact selectors below required to override `.table-striped` and prevent
// inheritance to nested tables.
.table > thead > tr,
.table > tbody > tr,
.table > tfoot > tr {
> td.#{$state},
> th.#{$state},
&.#{$state} > td,
&.#{$state} > th {
background-color: $background;
border-color: $border;
}
}
// Hover states for `.table-hover`
// Note: this is not available for cells or rows within `thead` or `tfoot`.
.table-hover > tbody > tr {
> td.#{$state}:hover,
> th.#{$state}:hover,
&.#{$state}:hover > td {
background-color: darken($background, 5%);
border-color: darken($border, 5%);
}
}
}
// Button variants
// -------------------------
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
@mixin button-variant($color, $background, $border) {
color: $color;
background-color: $background;
border-color: $border;
&:hover,
&:focus,
&:active,
&.active {
color: $color;
background-color: darken($background, 8%);
border-color: darken($border, 12%);
}
.open & { &.dropdown-toggle {
color: $color;
background-color: darken($background, 8%);
border-color: darken($border, 12%);
} }
&:active,
&.active {
background-image: none;
}
.open & { &.dropdown-toggle {
background-image: none;
} }
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: $background;
border-color: $border
}
}
}
// Button sizes
// -------------------------
@mixin button-size($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: $border-radius;
}
// Pagination
// -------------------------
@mixin pagination-size($padding-vertical, $padding-horizontal, $font-size, $border-radius) {
> li {
> a,
> span {
padding: $padding-vertical $padding-horizontal;
font-size: $font-size;
}
&:first-child {
> a,
> span {
@include border-left-radius($border-radius);
}
}
&:last-child {
> a,
> span {
@include border-right-radius($border-radius);
}
}
}
}
// Labels
// -------------------------
@mixin label-variant($color) {
background-color: $color;
&[href] {
&:hover,
&:focus {
background-color: darken($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.
@mixin navbar-vertical-align($element-height) {
margin-top: (($navbar-height - $element-height) / 2);
margin-bottom: (($navbar-height - $element-height) / 2);
}
// Progress bars
// -------------------------
@mixin progress-bar-variant($color) {
background-color: $color;
.progress-striped & {
@include gradient-striped($color);
}
}
// Responsive utilities
// -------------------------
// More easily include all the states for responsive-utilities.less.
// [converter] $parent hack
@mixin responsive-visibility($parent) {
#{$parent} { display: block !important; }
tr#{$parent} { display: table-row !important; }
th#{$parent},
td#{$parent} { display: table-cell !important; }
}
// [converter] $parent hack
@mixin responsive-invisibility($parent) {
#{$parent} { display: none !important; }
tr#{$parent} { display: none !important; }
th#{$parent},
td#{$parent} { display: none !important; }
}
// Grid System
// -----------
// Centered container element
@mixin container-fixed() {
margin-right: auto;
margin-left: auto;
padding-left: ($grid-gutter-width / 2);
padding-right: ($grid-gutter-width / 2);
@include clearfix();
}
// Creates a wrapper for a series of columns
@mixin make-row($gutter: $grid-gutter-width) {
margin-left: ($gutter / -2);
margin-right: ($gutter / -2);
@include clearfix();
}
// Generate the extra small columns
@mixin make-xs-column($columns, $gutter: $grid-gutter-width) {
position: relative;
float: left;
width: percentage(($columns / $grid-columns));
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: ($gutter / 2);
padding-right: ($gutter / 2);
}
// Generate the small columns
@mixin make-sm-column($columns, $gutter: $grid-gutter-width) {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: ($gutter / 2);
padding-right: ($gutter / 2);
// Calculate width based on number of columns available
@media (min-width: $screen-sm) {
float: left;
width: percentage(($columns / $grid-columns));
}
}
// Generate the small column offsets
@mixin make-sm-column-offset($columns) {
@media (min-width: $screen-sm) {
margin-left: percentage(($columns / $grid-columns));
}
}
@mixin make-sm-column-push($columns) {
@media (min-width: $screen-sm) {
left: percentage(($columns / $grid-columns));
}
}
@mixin make-sm-column-pull($columns) {
@media (min-width: $screen-sm) {
right: percentage(($columns / $grid-columns));
}
}
// Generate the medium columns
@mixin make-md-column($columns, $gutter: $grid-gutter-width) {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: ($gutter / 2);
padding-right: ($gutter / 2);
// Calculate width based on number of columns available
@media (min-width: $screen-md) {
float: left;
width: percentage(($columns / $grid-columns));
}
}
// Generate the large column offsets
@mixin make-md-column-offset($columns) {
@media (min-width: $screen-md) {
margin-left: percentage(($columns / $grid-columns));
}
}
@mixin make-md-column-push($columns) {
@media (min-width: $screen-md) {
left: percentage(($columns / $grid-columns));
}
}
@mixin make-md-column-pull($columns) {
@media (min-width: $screen-md) {
right: percentage(($columns / $grid-columns));
}
}
// Generate the large columns
@mixin make-lg-column($columns, $gutter: $grid-gutter-width) {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: ($gutter / 2);
padding-right: ($gutter / 2);
// Calculate width based on number of columns available
@media (min-width: $screen-lg) {
float: left;
width: percentage(($columns / $grid-columns));
}
}
// Generate the large column offsets
@mixin make-lg-column-offset($columns) {
@media (min-width: $screen-lg) {
margin-left: percentage(($columns / $grid-columns));
}
}
@mixin make-lg-column-push($columns) {
@media (min-width: $screen-lg) {
left: percentage(($columns / $grid-columns));
}
}
@mixin make-lg-column-pull($columns) {
@media (min-width: $screen-lg) {
right: percentage(($columns / $grid-columns));
}
}
// Form validation states
//
// Used in forms.less to generate the form validation CSS for warnings, errors,
// and successes.
@mixin form-control-validation($text-color: #555, $border-color: #ccc, $background-color: #f5f5f5) {
// Color the label and help text
.help-block,
.control-label {
color: $text-color;
}
// Set the border and box shadow on specific inputs to match
.form-control {
border-color: $border-color;
@include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
&:focus {
border-color: darken($border-color, 10%);
$shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%);
@include box-shadow($shadow);
}
}
// Set validation states also for addons
.input-group-addon {
color: $text-color;
border-color: $border-color;
background-color: $background-color;
}
}
// Form control focus state
//
// Generate a customized focus state and for any input with the specified color,
// which defaults to the `$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.
@mixin form-control-focus($color: $input-border-focus) {
$color-rgba: rgba(red($color), green($color), blue($color), .6);
&:focus {
border-color: $color;
outline: 0;
@include 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!
// [converter] $parent hack
@mixin input-size($parent, $input-height, $padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
#{$parent} { height: $input-height;
padding: $padding-vertical $padding-horizontal;
font-size: $font-size;
line-height: $line-height;
border-radius: $border-radius; }
select#{$parent} {
height: $input-height;
line-height: $input-height;
}
textarea#{$parent} {
height: auto;
}
}