.noise{
  pointer-events:none;
  position:fixed;
  inset:0;
  opacity:.12;
  mix-blend-mode:overlay;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,.03) 0, rgba(255,255,255,.03) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 4px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.02) 0, rgba(255,255,255,.02) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 6px);
  filter:contrast(130%) brightness(110%);
}