What does the progressive enhancement approach focus on in design?

The progressive enhancement approach focuses on designing from the smallest screen to the largest, which means starting with a basic user experience that works even on the most limited devices or browsers. This strategy ensures that all users have access to the core functionality of a product, regardless of their device capabilities. By beginning with a minimal viable design, designers can then layer on enhancements—such as improved visuals or advanced features—for devices that can handle them. This approach prioritizes accessibility and usability, allowing for a more inclusive experience across a wide spectrum of users and devices.

When designing in this manner, the emphasis is placed on building a solid foundation that works for everyone and enhancing that experience progressively based on the capabilities of the user's device. This method contrasts with starting from the largest screen, which might overlook the needs of users on smaller devices, leading to a potential exclusion of a significant portion of the audience.