.pf-mastercard:before {
    content: url('../resources/images/creditcards/mastercard_color.png');
}

.pf-mastercard-alt:before {
    content: url('../resources/images/creditcards/mastercard_color.png');
}

.pf-visa:before {
    background-size: contain;
    background-repeat: no-repeat;
    content: '';
    display: block;
    height: 30px;
    padding: 1px 0;
    position: relative;
    width: 49px;
    background-position: center center;
    background-image: url('../resources/images/creditcards/visa_color.png');
}

.pf-unionpay:before {
    background-size: contain;
    background-repeat: no-repeat;
    content: '';
    display: block;
    height: 30px;
    padding: 1px 0;
    position: relative;
    width: 49px;
    background-position: center center;
    background-image: url('../resources/images/creditcards/upi.png');
}