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

.d-flex {
  display: flex;
}

.justify-content-center {
  justify-content: center;
}

.flex-column {
  flex-direction: column;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-3 {
  margin-top: 1rem;
}