noble/resources/sass/components/_breadcrumbs.scss

.breadcrumb {
  &.breadcrumb-line {
    .breadcrumb-item {
      + .breadcrumb-item {
        &::before {
          content: "-" !important;
        }
      }
    }
  }
  &.breadcrumb-dot {
    .breadcrumb-item {
      + .breadcrumb-item {
        &::before {
          content: "•" !important;
        }
      }
    }
  }
  &.breadcrumb-arrow {
    .breadcrumb-item {
      + .breadcrumb-item {
        &::before {
          content: ">" !important;
        }
      }
    }
  }
}