position: absolute;
      top: 16mm;
      left: 8mm;
      transform: translate(-50%, -50%);
    }
    /* Grid layout for inner squares */
    .grid {
      display: grid;
      grid-template-columns: repeat(4, 8mm); /* 4 squares wide, 8mm each */
      grid-template-rows: repeat(6, 8mm); /* 6 squares down, 8mm each */
      gap: 2.5mm; /* Center gap between squares */
      position: absolute;
      top: -4.25mm;
      left: -4.25mm;
    }
    .grid .inner-square {
      position: relative