Overleaf/services/web/frontend/stylesheets/bootstrap-5/components/dropdown-menu.scss

.dropdown {
  display: inline-flex;
}

.dropdown-menu {
  @include shadow-sm;

  border: none;
  border-radius: var(--border-radius-base);
  padding: var(--spacing-02);
  transform: none;
  width: 240px;
}

.dropdown-item {
  @include body-sm;

  border-radius: var(--border-radius-base);
  color: var(--neutral-90);
  display: grid;
  grid-auto-flow: column;
  justify-content: start;
  min-height: 44px; // a minimum height of 44px to be accessible for touch screens
  padding: var(--spacing-05) var(--spacing-04);
  position: relative;

  &:active {
    background-color: var(--bg-accent-03);
    color: inherit;
  }

  &:hover:not(.active),
  &:focus:not(.active) {
    background-color: var(--bg-light-secondary);
    cursor: pointer;
    text-decoration: none;
  }

  &[variant='danger'] {
    color: var(--content-danger);

    &:hover:not(.active),
    &:focus:not(.active) {
      background-color: var(--bg-danger-03);
    }
  }

  &.active {
    background-color: var(--bg-accent-03);
    color: var(--green-70);
  }
}

.dropdown-divider {
  border-radius: 1px;
  background-color: var(--border-divider);
  margin: 2px 6px;
}

.dropdown-item-description {
  @include body-xs;

  color: var(--content-secondary);
  margin-top: var(--spacing-01);
}

.dropdown-item-description-container {
  grid-auto-flow: row;
  min-height: 60px;
}

.dropdown-item-trailing-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
}

.dropdown-item-leading-icon {
  padding-right: var(--spacing-04);
}

// description text should look disabled when the dropdown item is disabled
.dropdown-item.disabled .dropdown-item-description,
.dropdown-item[aria-disabled='true'] .dropdown-item-description {
  background-color: transparent;
  color: var(--content-disabled);
}

// override disabled styles when the state is active
.dropdown-item.active .dropdown-item-description {
  background-color: initial;
  color: var(--green-70);
}

.dropdown-button-toggle {
  border-bottom-left-radius: 0;
  border-top-left-radius: 0;
  padding-right: var(--spacing-05);
  padding-left: var(--spacing-05);

  &.btn-primary,
  &.btn-danger {
    border-left: 1px solid rgb($neutral-90, 0.16);
  }

  &.btn-secondary {
    border-left: 1px solid var(--neutral-60);
  }

  &[disabled],
  &[aria-disabled='true'] {
    border-left: 1px solid var(--neutral-10);
  }
}

.select-dropdown-menu {
  top: 100%;
  margin-top: var(--spacing-04);
  width: 100%;
  max-height: 200px;
  overflow: auto;
  overflow-x: hidden;
}

.dropdown-item--highlighted {
  background-color: var(--bg-light-secondary);
}