.rules {
  font-family: Arial, Helvetica, sans-serif;
}

.l0 {
  font-size: 24px;
  font-weight: bold;
}

.l1 {
  font-size: 18px;
  font-weight: bold;
  padding-left: 15px;
}

.l2 {
  font-size: 15px;
  padding-left: 30px;
}

.l3 {
  font-size: 12px;
  padding-left: 45px;
}