:root {
  --indigo1: hsl(225, 60.0%, 99.4%);
  --indigo2: hsl(223, 100%, 98.6%);
  --indigo3: hsl(223, 98.4%, 97.1%);
  --indigo4: hsl(223, 92.9%, 95.0%);
  --indigo5: hsl(224, 87.1%, 92.0%);
  --indigo6: hsl(224, 81.9%, 87.8%);
  --indigo7: hsl(225, 77.4%, 82.1%);
  --indigo8: hsl(226, 75.4%, 74.5%);
  --indigo9: hsl(226, 70.0%, 55.5%);
  --indigo10: hsl(226, 58.6%, 51.3%);
  --indigo11: hsl(226, 55.0%, 45.0%);
  --indigo12: hsl(226, 62.0%, 17.0%);
}