.stamp-border {
  /* Change this value to adjust the stamp perforation size: */
  --radius: 8px;

  background-image: radial-gradient(var(--radius), transparent 98%, white),
    linear-gradient(white 0 0);
  background-repeat: round, no-repeat;
  background-position: calc(var(--radius) * -1.5) calc(var(--radius) * -1.5),
    50%;
  background-size: calc(var(--radius) * 3) calc(var(--radius) * 3),
    calc(100% - var(--radius) * 3) calc(100% - var(--radius) * 3);
}

.stamp-border-ls {
  /* Change this value to adjust the stamp perforation size: */
  --radius: 8px;

  background-image: radial-gradient(
      var(--radius),
      transparent 98%,
      var(--color-gray-200)
    ),
    linear-gradient(var(--color-gray-200) 0 0);
  background-repeat: round, no-repeat;
  background-position: calc(var(--radius) * -1.5) calc(var(--radius) * -1.5),
    50%;
  background-size: calc(var(--radius) * 3) calc(var(--radius) * 3),
    calc(100% - var(--radius) * 3) calc(100% - var(--radius) * 3);
}