doku-payment.css

 @charset "UTF-8";
@import url("https://fonts.googleapis.com/css?family=Roboto:400,700");
.doku-payment {  
  color: #333333;
  font-family: "Roboto", sans-serif;
}

.doku-payment .step-container {
  background: #ffffff;
  border-radius: 4px;
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.2);
  margin: 80px auto;
  max-width: 340px;
  overflow: hidden;
}
.doku-payment .step-header {
  padding: 20px;
  text-align: center;
}
.doku-payment .step-indicator {
  background: #dedede;
  border-radius: 4px;
  display: inline-block;
  height: 8px;
  margin: 0 4px;
  margin-bottom: 20px;
  width: 8px;
}
.doku-payment .step-indicator.current {
  background: #888888;
}
.doku-payment .step-title {
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 1px;
  margin: 0;
  /* margin-bottom: 20px; */
}

.doku-payment .payment {
  height: 55px;
  position: relative;
}
.doku-payment .payment-image {
  position: absolute;
  top: 50%;
  left: 20px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  width: 40px;
  z-index: 2;
}
.doku-payment .payment-label {
  border-top: 1px solid #dedede;
  cursor: pointer;
  display: flex;
  font-size: 14px;
  font-weight: bold;
  align-items: center;
  letter-spacing: 1px;
  padding: 0 0 0 85px;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  text-transform: uppercase;
}
.doku-payment .payment-label:hover {
  background: #eeeeee;
}
.doku-payment .payment-option {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  position: absolute;
  top: 50%;
  right: 40px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  transition: all .2s ease-in;
  opacity: 0;
  outline: none;
  z-index: 2;
}
.doku-payment .payment-option:checked {
  right: 20px;
  opacity: 1;
}
.doku-payment .payment-option:checked + .payment-label {
  background: #eeeeee;
}

.doku-payment .payment-option:checked:after {
  width: 20px;
}

.doku-payment .button {
  background: #598BDD;
  color: #ffffff;
  display: block;
  font-size: 14px;
  font-weight: bold;
  line-height: 20px;
  letter-spacing: 1px;
  padding: 15px;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: all .2s;
}
.doku-payment .button:hover {
  background: #5485D4;
}