.fei-round-1 {
  height: 30px;
  width: 30px;
}

.fei-round-2 {
  height: 50px;
  width: 50px;
}

.fei-round-3 {
  height: 100px;
  width: 100px;
}

.fei-round-4 {
  height: 250px;
  width: 250px;
}