.breadcrumb-item:not(:first-child)::before {
  content: "";
  opacity: .4;
  background-color: transparent;
  border-top: 1px solid;
  border-right: 1px solid;
  width: .375rem;
  height: .375rem;
  margin-left: .5rem;
  margin-right: .75rem;
  display: block;
  rotate: 45deg;
}