I have upgraded my store to Magento CE 2.1.4 recently. We have Braintree configured as a payment solution, however, in this latest update, the layout of the payment page has altered. The iframes of Braintree are transparent and it has altered the layout. This layout, however, is very offputting for customers and has reduced the number of customers converting on our site. As seen in the attached image. I have contacted some other developers and they told me the code could not be edited due to it being in the payment area. Braintree have also stated that neither Braintree nor a developer contracted by Braintree authored this extension. So their knowledge is limited on the area.