.psa-space-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  opacity: .34;
  mix-blend-mode: screen;
  filter: grayscale(.42) contrast(1.08);
  pointer-events: none;
}

.stackhal-site > .site-header,
.stackhal-site > main,
.stackhal-site > footer {
  position: relative;
  z-index: 1;
}

@media (max-width: 800px) {
  .psa-space-background {
    opacity: .22;
  }
}

@media (prefers-reduced-motion: reduce) {
  .psa-space-background {
    opacity: .26;
  }
}