body {
  font-family: Arial;
}

.coupon {
  border: 2px solid black;
  width: 80%;
  margin: 0 auto;
  max-width: 600px;
}

.container {
  padding: 2px 16px;
  background-color: #f1f1f1;
}

.promo {
  background: #ccc;
  padding: 3px;
}

.expire {
  color: red;
}