div.channels:after {
  content: "";
  display: block;
  background-image: url(https://kinsta.com/de/wp-content/uploads/sites/5/2018/09/stripe-vs-paypal.png);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center center;
  height: 50px;
  margin-top: 20px;
}