DailyUI - Day 02 - Credit Card Checkout

Based on this article on a checkout usability study: https://baymard.com/blog/visually-reinforce-sensitive-fields
I redesigned the first mock-up displayed there. This is the first out of two versions; this one follows the points being made in the article more closely. See the other version here https://dribbble.com/shots/11353750-DailyUI-Day-02-Credit-Card-Checkout