.coupon {
    border: 5px dotted #bbb;
    width: 80%;
    border-radius: 15px;
    margin: 0 auto;
    max-width: 600px;
}

.container-coupon {
    padding: 8px 16px;
    background-color: #f1f1f1;
}

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

.expire {
    color: red;
}

.center-coupon-img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 60%;
}

.usd, .cents {
    font-size: 25px;
}

.number {
    font-size: 50px;
    font-weight: 700;
}

sup {
    top: -15px;
}