Below content is applicable to both Atomic and AX2:
The customisation for the payment pages is stored as part of the organisation details in APEXX in form of a .css file. If you require differently presented payment pages per brand (or simply wish to retain some flexibility around your styling options), you can send the transaction_css_template attribute in the hostedPaymentPage request.
Option 1:
Complete attached .css file with the styling options for your organisation(s) and forward it to your APEXX implementation manager
Option 2:
Send the .css data as part of the payment request - sample JSON file attached. This feature needs to be switched on by your Implementation Manager - if the styling options don't appear as expected on the first attempt, just ask for the use of individual templates to be activated.
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