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resources/assets/vendor/scss/_bootstrap-extended/_dropdown.scss

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+// Dropdowns
+// *****************************************************************
+
+// On hover outline
+[data-trigger='hover'] {
+  outline: 0;
+}
+
+.dropdown-menu {
+  box-shadow: $dropdown-box-shadow;
+
+  // Mega dropdown inside the dropdown menu
+  .mega-dropdown > & {
+    left: 0 !important;
+    right: 0 !important;
+  }
+
+  // Badge within dropdown menu
+  .badge[class^='float-'],
+  .badge[class*=' float-'] {
+    position: relative;
+    top: 0.071em;
+  }
+
+  // Dark style
+  @if $dark-style {
+    .list-group-item {
+      border-color: rgba-to-hex($dropdown-divider-bg, $dropdown-bg);
+    }
+  }
+
+  // For RTL
+  @include rtl-style {
+    text-align: right;
+  }
+}
+// Dropdown item line height
+.dropdown-item {
+  li:not(:first-child) &,
+  .dropdown-menu &:not(:first-child) {
+    margin-top: 2px;
+  }
+  border-radius: $dropdown-border-radius;
+  &.disabled .waves-ripple {
+    display: none;
+  }
+}
+
+// Hidden dropdown toggle arrow
+.dropdown-toggle.hide-arrow,
+.dropdown-toggle-hide-arrow > .dropdown-toggle {
+  &::before,
+  &::after {
+    display: none;
+  }
+}
+
+// Dropdown caret icon
+
+@if $enable-caret {
+  // Dropdown arrow
+  .dropdown-toggle::after {
+    @include caret-down($caret-width);
+  }
+  // Dropend arrow
+  .dropend .dropdown-toggle::after {
+    @include caret-right($caret-width);
+  }
+  // Dropstart arrow
+  .dropstart .dropdown-toggle::before {
+    @include caret-left($caret-width);
+  }
+  // Dropup arrow
+  .dropup .dropdown-toggle::after {
+    @include caret-up($caret-width);
+  }
+
+  .dropstart .dropdown-toggle::before,
+  .dropend .dropdown-toggle::after {
+    vertical-align: $caret-vertical-align;
+  }
+
+  @include rtl-only {
+    .dropdown-toggle:not(.dropdown-toggle-split)::after {
+      margin-left: 0;
+      margin-right: $caret-spacing;
+    }
+  }
+  @include ltr-only {
+    .dropdown-toggle-split:after {
+      margin-left: 0 !important;
+    }
+  }
+  @include rtl-only {
+    .dropdown-toggle-split:after {
+      margin-right: 0 !important;
+    }
+  }
+}
+
+@include rtl-only {
+  // Dropdown menu alignment
+  @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] {
+          left: auto;
+          right: 0;
+        }
+      }
+
+      .dropdown-menu#{$infix}-end {
+        --bs-position: end;
+
+        &[data-bs-popper] {
+          left: 0;
+          right: auto;
+        }
+      }
+    }
+  }
+}