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// The dropdown wrapper (`<div>`)
.dropup,
.dropend,
.dropdown,
.dropstart {
position: relative;
}
.dropdown-toggle {
white-space: nowrap;
// Generate the caret automatically
@include caret();
}
// The dropdown menu
.dropdown-menu {
position: absolute;
z-index: $zindex-dropdown;
display: none; // none by default, but block on "open" of the menu
min-width: $dropdown-min-width;
padding: $dropdown-padding-y $dropdown-padding-x;
margin: 0; // Override default margin of ul
@include font-size($dropdown-font-size);
color: $dropdown-color;
text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
list-style: none;
background-color: $dropdown-bg;
background-clip: padding-box;
border: $dropdown-border-width solid $dropdown-border-color;
@include border-radius($dropdown-border-radius);
@include box-shadow($dropdown-box-shadow);
&[data-bs-popper] {
top: 100%;
left: 0;
margin-top: $dropdown-spacer;
}
}
// scss-docs-start responsive-breakpoints
// We deliberately hardcode the `bs-` prefix because we check
// this custom property in JS to determine Popper's positioning
@each $breakpoint in map-keys($grid-breakpoints) {
@include media-breakpoint-up($breakpoint) {
$infix: breakpoint-infix($breakpoint, $grid-breakpoints);
.dropdown-menu#{$infix}-start {
--bs-position: start;
&[data-bs-popper] {
right: auto;
left: 0;
}
}
.dropdown-menu#{$infix}-end {
--bs-position: end;
&[data-bs-popper] {
right: 0;
left: auto;
}
}
}
}
// scss-docs-end responsive-breakpoints
// Allow for dropdowns to go bottom up (aka, dropup-menu)
// Just add .dropup after the standard .dropdown class and you're set.
.dropup {
.dropdown-menu[data-bs-popper] {
top: auto;
bottom: 100%;
margin-top: 0;
margin-bottom: $dropdown-spacer;
}
.dropdown-toggle {
@include caret(up);
}
}
.dropend {
.dropdown-menu[data-bs-popper] {
top: 0;
right: auto;
left: 100%;
margin-top: 0;
margin-left: $dropdown-spacer;
}
.dropdown-toggle {
@include caret(end);
&::after {
vertical-align: 0;
}
}
}
.dropstart {
.dropdown-menu[data-bs-popper] {
top: 0;
right: 100%;
left: auto;
margin-top: 0;
margin-right: $dropdown-spacer;
}
.dropdown-toggle {
@include caret(start);
&::before {
vertical-align: 0;
}
}
}
// Dividers (basically an `<hr>`) within the dropdown
.dropdown-divider {
height: 0;
margin: $dropdown-divider-margin-y 0;
overflow: hidden;
border-top: 1px solid $dropdown-divider-bg;
}
// Links, buttons, and more within the dropdown menu
//
// `<button>`-specific styles are denoted with `// For <button>s`
.dropdown-item {
display: block;
width: 100%; // For `<button>`s
padding: $dropdown-item-padding-y $dropdown-item-padding-x;
clear: both;
font-weight: $font-weight-normal;
color: $dropdown-link-color;
text-align: inherit; // For `<button>`s
text-decoration: if($link-decoration == none, null, none);
white-space: nowrap; // prevent links from randomly breaking onto new lines
background-color: transparent; // For `<button>`s
border: 0; // For `<button>`s
// Prevent dropdown overflow if there's no padding
// See https://github.com/twbs/bootstrap/pull/27703
@if $dropdown-padding-y == 0 {
&:first-child {
@include border-top-radius($dropdown-inner-border-radius);
}
&:last-child {
@include border-bottom-radius($dropdown-inner-border-radius);
}
}
&:hover,
&:focus {
color: $dropdown-link-hover-color;
text-decoration: if($link-hover-decoration == underline, none, null);
@include gradient-bg($dropdown-link-hover-bg);
}
&.active,
&:active {
color: $dropdown-link-active-color;
text-decoration: none;
@include gradient-bg($dropdown-link-active-bg);
}
&.disabled,
&:disabled {
color: $dropdown-link-disabled-color;
pointer-events: none;
background-color: transparent;
// Remove CSS gradients if they're enabled
background-image: if($enable-gradients, none, null);
}
}
.dropdown-menu.show {
display: block;
}
// Dropdown section headers
.dropdown-header {
display: block;
padding: $dropdown-header-padding;
margin-bottom: 0; // for use with heading elements
@include font-size($font-size-sm);
color: $dropdown-header-color;
white-space: nowrap; // as with > li > a
}
// Dropdown text
.dropdown-item-text {
display: block;
padding: $dropdown-item-padding-y $dropdown-item-padding-x;
color: $dropdown-link-color;
}
// Dark dropdowns
.dropdown-menu-dark {
color: $dropdown-dark-color;
background-color: $dropdown-dark-bg;
border-color: $dropdown-dark-border-color;
@include box-shadow($dropdown-dark-box-shadow);
.dropdown-item {
color: $dropdown-dark-link-color;
&:hover,
&:focus {
color: $dropdown-dark-link-hover-color;
@include gradient-bg($dropdown-dark-link-hover-bg);
}
&.active,
&:active {
color: $dropdown-dark-link-active-color;
@include gradient-bg($dropdown-dark-link-active-bg);
}
&.disabled,
&:disabled {
color: $dropdown-dark-link-disabled-color;
}
}
.dropdown-divider {
border-color: $dropdown-dark-divider-bg;
}
.dropdown-item-text {
color: $dropdown-dark-link-color;
}
.dropdown-header {
color: $dropdown-dark-header-color;
}
}