Stackedit/js/libs/bootstrap/less/mixins.less

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//
// 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.
.clearfix() {
&:before,
&:after {
content: " "; /* 1 */
display: table; /* 2 */
}
&:after {
clear: both;
}
}
// Webkit-style focus
.tab-focus() {
// Default
outline: thin dotted #333;
// Webkit
outline: 5px auto -webkit-focus-ring-color;
outline-offset: -2px;
}
// Center-align a block level element
.center-block() {
display: block;
margin-left: auto;
margin-right: auto;
}
// Sizing shortcuts
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.size(@width; @height) {
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width: @width;
height: @height;
}
.square(@size) {
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.size(@size; @size);
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}
// Placeholder text
.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
.text-overflow() {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
// CSS image replacement
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
.hide-text() {
font: ~"0/0" a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
// 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
.box-shadow(@shadow) {
-webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
box-shadow: @shadow;
}
// Transitions
.transition(@transition) {
-webkit-transition: @transition;
transition: @transition;
}
.transition-delay(@transition-delay) {
-webkit-transition-delay: @transition-delay;
transition-delay: @transition-delay;
}
.transition-duration(@transition-duration) {
-webkit-transition-duration: @transition-duration;
transition-duration: @transition-duration;
}
.transition-transform(@transition) {
-webkit-transition: -webkit-transform @transition;
-moz-transition: -moz-transform @transition;
-o-transition: -o-transform @transition;
transition: transform @transition;
}
// Transformations
.rotate(@degrees) {
-webkit-transform: rotate(@degrees);
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-ms-transform: rotate(@degrees); // IE9+
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transform: rotate(@degrees);
}
.scale(@ratio) {
-webkit-transform: scale(@ratio);
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-ms-transform: scale(@ratio); // IE9+
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transform: scale(@ratio);
}
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.translate(@x; @y) {
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-webkit-transform: translate(@x, @y);
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-ms-transform: translate(@x, @y); // IE9+
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transform: translate(@x, @y);
}
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.skew(@x; @y) {
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-webkit-transform: skew(@x, @y);
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-ms-transform: skewX(@x) skewY(@y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
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transform: skew(@x, @y);
}
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.translate3d(@x; @y; @z) {
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-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
.backface-visibility(@visibility){
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-webkit-backface-visibility: @visibility;
-moz-backface-visibility: @visibility;
backface-visibility: @visibility;
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}
// Box sizing
.box-sizing(@boxmodel) {
-webkit-box-sizing: @boxmodel;
-moz-box-sizing: @boxmodel;
box-sizing: @boxmodel;
}
// User select
// For selecting text on the page
.user-select(@select) {
-webkit-user-select: @select;
-moz-user-select: @select;
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-ms-user-select: @select; // IE10+
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-o-user-select: @select;
user-select: @select;
}
// Resize anything
.resizable(@direction) {
resize: @direction; // Options: horizontal, vertical, both
overflow: auto; // Safari fix
}
// CSS3 Content Columns
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.content-columns(@column-count; @column-gap: @grid-gutter-width) {
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-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;
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-ms-hyphens: @mode; // IE10+
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-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.
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.horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
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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: 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.
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.vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
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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: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
}
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.directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
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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
}
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.horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
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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: 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
}
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.vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
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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: 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
}
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.radial(@inner-color: #555; @outer-color: #333) {
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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;
}
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.striped(@color: #555; @angle: 45deg) {
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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
//
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// When you need to remove a gradient background, do not forget to use this to reset
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// the IE filter for IE9 and below.
.reset-filter() {
filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)"));
}
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// Retina images
//
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// Short retina mixin for setting background-image and -size
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.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {
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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;
}
}
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// 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
}
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// 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;
}
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// Panels
// -------------------------
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.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border;) {
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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;
}
}
}
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// Alerts
// -------------------------
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.alert-variant(@background; @border; @text-color) {
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background-color: @background;
border-color: @border;
color: @text-color;
hr {
border-top-color: darken(@border, 5%);
}
.alert-link {
color: darken(@text-color, 10%);
}
}
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// Tables
// -------------------------
.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;
}
}
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// 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
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// -------------------------
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
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.button-variant(@color; @background; @border) {
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color: @color;
background-color: @background;
border-color: @border;
&:hover,
&:focus,
&:active,
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&.active,
.open .dropdown-toggle& {
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color: @color;
background-color: darken(@background, 8%);
border-color: darken(@border, 12%);
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}
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&:active,
&.active,
.open .dropdown-toggle& {
background-image: none;
}
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&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: @background;
border-color: @border
}
}
}
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// 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);
}
}
}
}
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// Labels
// -------------------------
.label-variant(@color) {
background-color: @color;
&[href] {
&:hover,
&:focus {
background-color: darken(@color, 10%);
}
}
}
// Navbar vertical align
// -------------------------
// Vertically center elements in the navbar.
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// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
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.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(@color);
}
}
// Responsive utilities
// -------------------------
// More easily include all the states for responsive-utilities.less.
.responsive-visibility() {
display: block !important;
tr& { display: table-row !important; }
th&,
td& { display: table-cell !important; }
}
.responsive-invisibility() {
display: none !important;
tr& { display: none !important; }
th&,
td& { display: none !important; }
}
// Grid System
// -----------
// Centered container element
.container-fixed() {
margin-right: auto;
margin-left: auto;
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padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
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.clearfix();
}
// Creates a wrapper for a series of columns
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.make-row(@gutter: @grid-gutter-width) {
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margin-left: (@gutter / -2);
margin-right: (@gutter / -2);
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.clearfix();
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}
// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
float: left;
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width: percentage((@columns / @grid-columns));
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// 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
.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
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@media (min-width: @screen-sm) {
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float: left;
width: percentage((@columns / @grid-columns));
}
}
// Generate the small column offsets
.make-sm-column-offset(@columns) {
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@media (min-width: @screen-sm) {
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margin-left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-push(@columns) {
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@media (min-width: @screen-sm) {
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left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-pull(@columns) {
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@media (min-width: @screen-sm) {
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right: percentage((@columns / @grid-columns));
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}
}
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// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
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position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
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padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
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// Calculate width based on number of columns available
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@media (min-width: @screen-md) {
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float: left;
width: percentage((@columns / @grid-columns));
}
}
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// Generate the large column offsets
.make-md-column-offset(@columns) {
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@media (min-width: @screen-md) {
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margin-left: percentage((@columns / @grid-columns));
}
}
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.make-md-column-push(@columns) {
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@media (min-width: @screen-md) {
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left: percentage((@columns / @grid-columns));
}
}
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.make-md-column-pull(@columns) {
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@media (min-width: @screen-md) {
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right: percentage((@columns / @grid-columns));
}
}
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// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
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position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
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padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
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// Calculate width based on number of columns available
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@media (min-width: @screen-lg) {
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float: left;
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width: percentage((@columns / @grid-columns));
}
}
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// Generate the large column offsets
.make-lg-column-offset(@columns) {
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@media (min-width: @screen-lg) {
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margin-left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-push(@columns) {
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@media (min-width: @screen-lg) {
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left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-pull(@columns) {
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@media (min-width: @screen-lg) {
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right: percentage((@columns / @grid-columns));
}
}
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// Form validation states
//
// Used in forms.less to generate the form validation CSS for warnings, errors,
// and successes.
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.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
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// 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;
.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;
}
}
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// 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;
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select& {
height: @input-height;
line-height: @input-height;
}
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textarea& {
height: auto;
}
}