keiji/html/css/bootstrap-5.0.2/site/content/docs/5.0/examples/heroes/heroes.css

.b-example-divider {
  height: 3rem;
  background-color: rgba(0, 0, 0, .1);
  border: solid rgba(0, 0, 0, .15);
  border-width: 1px 0;
  box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
}

@media (min-width: 992px) {
  .rounded-lg-3 { border-radius: .3rem; }
}