Although we have all heard someone passionately declare, “UX is not UI,” visual design is a fundamental part of the user experience. Good design is in the details. It builds trust. It creates hierarchy of information. It makes buttons look clickable. It has the power to transform a functional experience into a delightful experience. So how we can ensure that the visual details we design are brought to life as intended? Can moving an object 1 pixel to the left really make a difference? In an attempt to find a common language between designers and developers, we will discuss what details are worth fighting for versus when to let go.