// The dropdown wrapper (`<div>`) .dropup, .dropdown {

position: relative;

}

.dropdown-toggle {

// Generate the caret automatically
&::after {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: $caret-width;
  vertical-align: middle;
  content: "";
  border-top: $caret-width solid;
  border-right: $caret-width solid transparent;
  border-left: $caret-width solid transparent;
}

// Prevent the focus on the dropdown toggle when closing dropdowns
&:focus {
  outline: 0;
}

}

.dropup {

.dropdown-toggle {
  &::after {
    border-top: 0;
    border-bottom: $caret-width solid;
  }
}

}

// The dropdown menu .dropdown-menu {

position: absolute;
top: 100%;
left: 0;
z-index: $zindex-dropdown;
display: none; // none by default, but block on "open" of the menu
float: left;
min-width: $dropdown-min-width;
padding: $dropdown-padding-y 0;
margin: $dropdown-margin-top 0 0; // override default ul
font-size: $font-size-base; // Redeclare because nesting can cause inheritance issues
color: $body-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 $dropdown-border-color;
@include border-radius($border-radius);
@include box-shadow($dropdown-box-shadow);

}

// Dividers (basically an `<hr>`) within the dropdown .dropdown-divider {

@include nav-divider($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: 3px $dropdown-item-padding-x;
clear: both;
font-weight: $font-weight-normal;
color: $dropdown-link-color;
text-align: inherit; // For `<button>`s
white-space: nowrap; // prevent links from randomly breaking onto new lines
background: none; // For `<button>`s
border: 0; // For `<button>`s

@include hover-focus {
  color: $dropdown-link-hover-color;
  text-decoration: none;
  background-color: $dropdown-link-hover-bg;
}

&.active,
&:active {
  color: $dropdown-link-active-color;
  text-decoration: none;
  background-color: $dropdown-link-active-bg;
}

&.disabled,
&:disabled {
  color: $dropdown-link-disabled-color;
  cursor: $cursor-disabled;
  background-color: transparent;
  // Remove CSS gradients if they're enabled
  @if $enable-gradients {
    background-image: none;
  }
}

}

// Open state for the dropdown .show {

// Show the menu
> .dropdown-menu {
  display: block;
}

// Remove the outline when :focus is triggered
> a {
  outline: 0;
}

}

// Menu positioning // // Add extra class to `.dropdown-menu` to flip the alignment of the dropdown // menu with the parent. .dropdown-menu-right {

right: 0;
left: auto; // Reset the default from `.dropdown-menu`

}

.dropdown-menu-left {

right: auto;
left: 0;

}

// Dropdown section headers .dropdown-header {

display: block;
padding: $dropdown-padding-y $dropdown-item-padding-x;
margin-bottom: 0; // for use with heading elements
font-size: $font-size-sm;
color: $dropdown-header-color;
white-space: nowrap; // as with > li > a

}

// Backdrop to catch body clicks on mobile, etc. .dropdown-backdrop {

position: fixed;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: $zindex-dropdown-backdrop;

}

// Allow for dropdowns to go bottom up (aka, dropup-menu) // // Just add .dropup after the standard .dropdown class and you're set.

.dropup {

// Different positioning for bottom up menu
.dropdown-menu {
  top: auto;
  bottom: 100%;
  margin-bottom: $dropdown-margin-top;
}

}