.subliminal-overlay{
  position:fixed;top:50%;left:50%;
  transform:translate(-50%,-50%);
  font:700 11vh/1 var(--sans, sans-serif);
  color:#fff;
  letter-spacing:.08em;
  white-space:nowrap;
  opacity:0;
  pointer-events:none;
  z-index:25;
  user-select:none;
  text-shadow:0 0 10px #000
}
.subliminal-overlay.show{opacity:.3}