mirror of
https://github.com/twbs/bootstrap.git
synced 2024-12-10 22:24:19 +01:00
694 lines
21 KiB
Plaintext
694 lines
21 KiB
Plaintext
//
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// Mixins
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// --------------------------------------------------
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// Utilities
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// -------------------------
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// Clearfix
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// Source: http://nicolasgallagher.com/micro-clearfix-hack/
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//
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// For modern browsers
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// 1. The space content is one way to avoid an Opera bug when the
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// contenteditable attribute is included anywhere else in the document.
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// Otherwise it causes space to appear at the top and bottom of elements
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// that are clearfixed.
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// 2. The use of `table` rather than `block` is only necessary if using
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// `:before` to contain the top-margins of child elements.
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.clearfix() {
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&:before,
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&:after {
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content: " "; /* 1 */
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display: table; /* 2 */
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}
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&:after {
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clear: both;
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}
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}
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// Webkit-style focus
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.tab-focus() {
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// Default
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outline: thin dotted #333;
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// Webkit
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outline: 5px auto -webkit-focus-ring-color;
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outline-offset: -2px;
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}
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// Center-align a block level element
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.center-block() {
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display: block;
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margin-left: auto;
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margin-right: auto;
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}
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// Sizing shortcuts
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.size(@width; @height) {
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width: @width;
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height: @height;
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}
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.square(@size) {
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.size(@size; @size);
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}
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// Placeholder text
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.placeholder(@color: @input-color-placeholder) {
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&:-moz-placeholder { color: @color; } // Firefox 4-18
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&::-moz-placeholder { color: @color; } // Firefox 19+
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&:-ms-input-placeholder { color: @color; } // Internet Explorer 10+
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&::-webkit-input-placeholder { color: @color; } // Safari and Chrome
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}
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// Text overflow
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// Requires inline-block or block for proper styling
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.text-overflow() {
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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// CSS image replacement
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// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
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.hide-text() {
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font: ~"0/0" a;
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color: transparent;
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text-shadow: none;
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background-color: transparent;
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border: 0;
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}
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// CSS3 PROPERTIES
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// --------------------------------------------------
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// Single side border-radius
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.border-top-radius(@radius) {
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border-top-right-radius: @radius;
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border-top-left-radius: @radius;
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}
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.border-right-radius(@radius) {
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border-bottom-right-radius: @radius;
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border-top-right-radius: @radius;
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}
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.border-bottom-radius(@radius) {
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border-bottom-right-radius: @radius;
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border-bottom-left-radius: @radius;
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}
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.border-left-radius(@radius) {
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border-bottom-left-radius: @radius;
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border-top-left-radius: @radius;
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}
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// Drop shadows
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.box-shadow(@shadow) {
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-webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
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box-shadow: @shadow;
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}
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// Transitions
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.transition(@transition) {
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-webkit-transition: @transition;
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transition: @transition;
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}
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.transition-delay(@transition-delay) {
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-webkit-transition-delay: @transition-delay;
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transition-delay: @transition-delay;
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}
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.transition-duration(@transition-duration) {
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-webkit-transition-duration: @transition-duration;
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transition-duration: @transition-duration;
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}
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.transition-transform(@transition) {
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-webkit-transition: -webkit-transform @transition;
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-moz-transition: -moz-transform @transition;
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-o-transition: -o-transform @transition;
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transition: transform @transition;
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}
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// Transformations
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.rotate(@degrees) {
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-webkit-transform: rotate(@degrees);
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-ms-transform: rotate(@degrees); // IE9+
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transform: rotate(@degrees);
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}
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.scale(@ratio) {
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-webkit-transform: scale(@ratio);
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-ms-transform: scale(@ratio); // IE9+
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transform: scale(@ratio);
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}
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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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}
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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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}
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.translate3d(@x; @y; @z) {
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-webkit-transform: translate3d(@x, @y, @z);
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transform: translate3d(@x, @y, @z);
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}
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// Backface visibility
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// Prevent browsers from flickering when using CSS 3D transforms.
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// Default value is `visible`, but can be changed to `hidden`
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// See git pull https://github.com/dannykeane/bootstrap.git backface-visibility for examples
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.backface-visibility(@visibility){
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-webkit-backface-visibility: @visibility;
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-moz-backface-visibility: @visibility;
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backface-visibility: @visibility;
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}
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// Box sizing
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.box-sizing(@boxmodel) {
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-webkit-box-sizing: @boxmodel;
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-moz-box-sizing: @boxmodel;
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box-sizing: @boxmodel;
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}
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// User select
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// For selecting text on the page
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.user-select(@select) {
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-webkit-user-select: @select;
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-moz-user-select: @select;
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-ms-user-select: @select; // IE10+
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-o-user-select: @select;
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user-select: @select;
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}
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// Resize anything
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.resizable(@direction) {
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resize: @direction; // Options: horizontal, vertical, both
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overflow: auto; // Safari fix
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}
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// 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;
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-moz-column-count: @column-count;
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column-count: @column-count;
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-webkit-column-gap: @column-gap;
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-moz-column-gap: @column-gap;
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column-gap: @column-gap;
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}
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// Optional hyphenation
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.hyphens(@mode: auto) {
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word-wrap: break-word;
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-webkit-hyphens: @mode;
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-moz-hyphens: @mode;
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-ms-hyphens: @mode; // IE10+
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-o-hyphens: @mode;
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hyphens: @mode;
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}
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// Opacity
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.opacity(@opacity) {
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opacity: @opacity;
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// IE8 filter
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@opacity-ie: (@opacity * 100);
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filter: ~"alpha(opacity=@{opacity-ie})";
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}
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// GRADIENTS
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// --------------------------------------------------
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#gradient {
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// Horizontal gradient, from left to right
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//
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// Creates two color stops, start and end, by specifying a color and position for each color stop.
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// 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+
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background-image: -webkit-linear-gradient(left, color-stop(@start-color @start-percent), color-stop(@end-color @end-percent)); // Safari 5.1+, Chrome 10+
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background-image: -moz-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // FF 3.6+
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background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10
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background-repeat: repeat-x;
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filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
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}
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// Vertical gradient, from top to bottom
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//
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// Creates two color stops, start and end, by specifying a color and position for each color stop.
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// 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+
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background-image: -webkit-linear-gradient(top, @start-color, @start-percent, @end-color, @end-percent); // Safari 5.1+, Chrome 10+
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background-image: -moz-linear-gradient(top, @start-color @start-percent, @end-color @end-percent); // FF 3.6+
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background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10
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background-repeat: repeat-x;
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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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}
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.directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
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background-repeat: repeat-x;
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background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1+, Chrome 10+
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background-image: -moz-linear-gradient(@deg, @start-color, @end-color); // FF 3.6+
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background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10
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}
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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));
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background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
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background-image: -moz-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
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background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
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background-repeat: no-repeat;
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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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}
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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));
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background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
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background-image: -moz-linear-gradient(top, @start-color, @mid-color @color-stop, @end-color);
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background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
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background-repeat: no-repeat;
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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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}
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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));
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background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
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background-image: -moz-radial-gradient(circle, @inner-color, @outer-color);
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background-image: radial-gradient(circle, @inner-color, @outer-color);
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background-repeat: no-repeat;
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}
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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));
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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);
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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);
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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);
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}
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}
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// Reset filters for IE
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//
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// When you need to remove a gradient background, don't forget to use this to reset
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// the IE filter for IE9 and below.
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.reset-filter() {
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filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)"));
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}
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// RETINA IMAGE SUPPORT
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// --------------------------------------------------
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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}");
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@media
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only screen and (-webkit-min-device-pixel-ratio: 2),
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only screen and ( min--moz-device-pixel-ratio: 2),
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only screen and ( -o-min-device-pixel-ratio: 2/1),
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only screen and ( min-device-pixel-ratio: 2),
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only screen and ( min-resolution: 192dpi),
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only screen and ( min-resolution: 2dppx) {
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background-image: url("@{file-2x}");
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background-size: @width-1x @height-1x;
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}
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}
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// COMPONENT MIXINS
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// --------------------------------------------------
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// Horizontal dividers
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// -------------------------
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// Dividers (basically an hr) within dropdowns and nav lists
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.nav-divider(@color: #e5e5e5) {
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height: 1px;
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margin: ((@line-height-computed / 2) - 1) 0;
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overflow: hidden;
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background-color: @color;
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}
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// Panels
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// -------------------------
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.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border) {
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border-color: @border;
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.panel-heading {
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color: @heading-text-color;
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background-color: @heading-bg-color;
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border-color: @heading-border;
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+ .panel-collapse .panel-body {
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border-top-color: @border;
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}
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}
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.panel-footer {
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+ .panel-collapse .panel-body {
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border-bottom-color: @border;
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}
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}
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}
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// Alerts
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// -------------------------
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.alert-variant(@background; @border; @text-color) {
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background-color: @background;
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border-color: @border;
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color: @text-color;
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hr {
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border-top-color: darken(@border, 5%);
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}
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.alert-link {
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color: darken(@text-color, 10%);
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}
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}
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// Button variants
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// -------------------------
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// Easily pump out default styles, as well as :hover, :focus, :active,
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// and disabled options for all buttons
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.button-variant(@color; @background; @border) {
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color: @color;
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background-color: @background;
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border-color: @border;
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&:hover,
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&:focus,
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&:active,
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&.active {
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color: @color;
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background-color: darken(@background, 8%);
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border-color: darken(@border, 12%);
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}
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&.disabled,
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&[disabled],
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fieldset[disabled] & {
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&,
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&:hover,
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&:focus,
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&:active,
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&.active {
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background-color: @background;
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border-color: @border
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}
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}
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}
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// Button sizes
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// -------------------------
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.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
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padding: @padding-vertical @padding-horizontal;
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font-size: @font-size;
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line-height: @line-height;
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border-radius: @border-radius;
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}
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// Pagination
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// -------------------------
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.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @border-radius) {
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> li {
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> a,
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> span {
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padding: @padding-vertical @padding-horizontal;
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font-size: @font-size;
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}
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&:first-child {
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> a,
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> span {
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.border-left-radius(@border-radius);
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}
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}
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&:last-child {
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> a,
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> span {
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.border-right-radius(@border-radius);
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}
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}
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}
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}
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// Labels
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// -------------------------
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.label-variant(@color) {
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background-color: @color;
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&[href] {
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&:hover,
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&:focus {
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background-color: darken(@color, 10%);
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}
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}
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}
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// Navbar vertical align
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// -------------------------
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// 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) {
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margin-top: ((@navbar-height - @element-height) / 2);
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margin-bottom: ((@navbar-height - @element-height) / 2);
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}
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// Progress bars
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// -------------------------
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.progress-bar-variant(@color) {
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background-color: @color;
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.progress-striped & {
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#gradient > .striped(@color);
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}
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}
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// Responsive utilities
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// -------------------------
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// More easily include all the states for responsive-utilities.less.
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.responsive-visibility() {
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display: block !important;
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tr& { display: table-row !important; }
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th&,
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td& { display: table-cell !important; }
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}
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.responsive-invisibility() {
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display: none !important;
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tr& { display: none !important; }
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th&,
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td& { display: none !important; }
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}
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// Grid System
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// -----------
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// Centered container element
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.container-fixed() {
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margin-right: auto;
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margin-left: auto;
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.clearfix();
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}
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|
// Creates a wrapper for a series of columns
|
|
.make-row(@gutter: @grid-gutter-width) {
|
|
// Then clear the floated columns
|
|
.clearfix();
|
|
|
|
.container & {
|
|
@media (min-width: @screen-small) {
|
|
margin-left: (@gutter / -2);
|
|
margin-right: (@gutter / -2);
|
|
}
|
|
}
|
|
|
|
// Negative margin nested rows out to align the content of columns
|
|
.row {
|
|
margin-left: (@gutter / -2);
|
|
margin-right: (@gutter / -2);
|
|
}
|
|
}
|
|
|
|
// Generate the extra small columns
|
|
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
|
|
position: relative;
|
|
float: left;
|
|
// Prevent columns from collapsing when empty
|
|
min-height: 1px;
|
|
// Inner gutter via padding
|
|
padding-left: (@gutter / 2);
|
|
padding-right: (@gutter / 2);
|
|
@max-width: (@screen-small - 1);
|
|
|
|
// Calculate width based on number of columns available
|
|
@media (max-width: @max-width) {
|
|
width: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// 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
|
|
@media (min-width: @screen-small) {
|
|
float: left;
|
|
width: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// Generate the small column offsets
|
|
.make-sm-column-offset(@columns) {
|
|
@media (min-width: @screen-small) {
|
|
margin-left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-sm-column-push(@columns) {
|
|
@media (min-width: @screen-small) {
|
|
left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-sm-column-pull(@columns) {
|
|
@media (min-width: @screen-small) {
|
|
right: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// Generate the medium columns
|
|
.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-medium) {
|
|
float: left;
|
|
width: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// Generate the large column offsets
|
|
.make-md-column-offset(@columns) {
|
|
@media (min-width: @screen-medium) {
|
|
margin-left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-md-column-push(@columns) {
|
|
@media (min-width: @screen-medium) {
|
|
left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-md-column-pull(@columns) {
|
|
@media (min-width: @screen-medium) {
|
|
right: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// Generate the large columns
|
|
.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-large) {
|
|
float: left;
|
|
width: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
// Generate the large column offsets
|
|
.make-lg-column-offset(@columns) {
|
|
@media (min-width: @screen-large) {
|
|
margin-left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-lg-column-push(@columns) {
|
|
@media (min-width: @screen-large) {
|
|
left: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
.make-lg-column-pull(@columns) {
|
|
@media (min-width: @screen-large) {
|
|
right: percentage((@columns / @grid-columns));
|
|
}
|
|
}
|
|
|
|
|
|
// 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 {
|
|
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;
|
|
}
|
|
}
|
|
|
|
// 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& {
|
|
height: auto;
|
|
}
|
|
}
|