The Claimant Experience Pilot application uses the U.S. Web Design System (USWDS) USWDS is a set of user interface components that make it easy to build accessible and usable government websites. USWDS components are responsive by default, so they work on mobile, tablet, and desktop views out of the box without any additional coding.
The following image shows a mobile vs. desktop side-by-side comparison of one page in the Claimant Experience Pilot application:
While using a design system like USWDS doesn't guarantee accessibility, it makes achieving accessibility easier. For example, some of the more complex components have explanations of the accessibility research that has gone into the design decisions surrounding those components. Additionally, many components in the design system are accompanied by guidance on accessible implementation.
One final benefit of using a design system like USWDS is that another organization takes on the system maintenance, freeing up your engineers and designers to focus on UI system implementation.
Give the Claimant Experience Pilot source code to your engineers, so they can see a reference implementation of USWDS.