#braille-bg {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
#braille-bg pre {
  font-family: monospace;
  font-size: clamp(0.28rem, 0.45vw, 0.42rem);
  line-height: 1.15;
  white-space: pre;
  color: #4ade80;
  opacity: 0.05;
  user-select: none;
}