How is the bank card networks bar implemented?

Step 1. Magento_Payment/template/payment/cc-form.html

Step 2. Magento_Payment/js/view/payment/cc-form::getIcons()

Step 3. Magento\Payment\Model\CcConfigProvider::getConfig()

Step 4. Magento\Payment\Model\CcConfigProvider::getIcons()

See also: