body {
  text-align: center;
}

.radioBtnBorder {
  border: 1px solid black;
  border-radius: 4px;
  display: flex;
  margin: 8px;
  padding: 4px;
}

#tier-input {
  display: flex;
  justify-content: center;
  margin-top: -12px;
  margin-bottom: 8px;
}