.mb-2 {
  margin-bottom: 8px;
}

.mb-3 {
  margin-bottom: 12px;
}

.mb-4 {
  margin-bottom: 16px;
}

.text-center {
  text-align: center;
}

.center-content {
  display: flex;
  justify-content: center;
  align-items: center;
}