.ec-size .ec-store .ec-cart-step--payment .ec-radiogroup__item:nth-child(4) .ec-radiogroup__info:after {
  content: '';
  background: url(https://sassme.ecwid.com/static/v1/icons/mastercard.svg) no-repeat;
  background-size: contain;
  height: 40px;
  width: 60px;
}