Real Components

Real-world UI components — product cards, admin tables, navigation bars, dropdowns, modals, carousels, pricing grids, kanbans — combine multiple CSS properties into dense, interdependent visual systems. Testing a component in isolation with a Storybook reference screenshot is not enough, because a regression can surface only when the component is integrated in its real context: a dropdown that opens behind a table because an overflow: hidden was added to fix another bug, a modal off-center because the body positioning was altered for a sticky component, or a carousel that displays two slides instead of one because the parent container changed width. On business interfaces, these regressions often hit critical features — archive buttons hidden inside a table, validation options invisible in a modal — and their operational impact goes well beyond simple visual discomfort. The consistency of a design system depends precisely on the stability of these components inside their real pages, sprint after sprint. Delta-QA captures the full pages containing these components, in their various interactive states (open menu, displayed modal, selected row), and compares the snapshots against the visual baseline. The diff highlights components whose dimensions, positioning, visible content, or stacking depth shifted between versions. This approach lets you confirm that a change in one part of the system has not broken another component at distance, and gives QA teams coverage of complete UI patterns that isolated component unit tests cannot, by construction, capture.