AdminLTE/scss/dark/bootstrap/_breadcrumb.scss

.breadcrumb {
  background-color: $breadcrumb-bg-alt;
}

.breadcrumb-item {
  // The separator between breadcrumbs (by default, a forward-slash: "/")
  + .breadcrumb-item {
    padding-left: $breadcrumb-item-padding-x;

    &::before {
      color: $breadcrumb-divider-color-alt;
      // TODO: DO I NEED THIS?
      // content: var(--#{$variable-prefix}breadcrumb-divider, escape-svg($breadcrumb-divider)) #{"/* rtl:"} var(--#{$variable-prefix}breadcrumb-divider, escape-svg($breadcrumb-divider-flipped)) #{"*/"};
    }
  }

  &.active {
    color: $breadcrumb-active-color-alt;
  }
}