.hero {
  background-image: url("/img/hero_bg-dark.jpg");
  background-color: rgba(0, 0, 0, 0.5);
  background-attachment: fixed;
  background-position-y: 40px;
}

.hero::before {
  content: "";
  position: absolute;
  margin-bottom: calc(var(--contact_header-height) * 3);
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: -1;
}