@layer utilities {
  pre code .line {
    @apply block relative min-h-[1rem];
  }
}

pre code .line::before {
  content: attr(data-line);
  position: absolute;
  top: 0;
  left: -6.25rem;
  color: #cccccc;
  user-select: none;
}

.dark pre code .line::before {
  color: #777777;
  opacity: 0.43;
}