Support visual preferences and reflow

The registration page reflows without two-dimensional scrolling for ordinary text and never uses color as the only status signal. This is a small part of a deliberately flawed event-registration page that is audited, repaired, and retested with real evidence, but the boundary it creates affects everything that follows.

Users change text size, colors, contrast, motion, and viewport to make content perceivable and comfortable. The useful target is not encyclopedic coverage. Make one deliberate choice, observe its consequences, and know which requirement would make you revise it.

Watch for one shortcut in particular: trying to lock layout dimensions and disable user scaling to preserve the design. It makes later failures harder to locate. Instead, use flexible layout, redundant cues, sufficient contrast, visible focus, and reduced-motion alternatives. Prefer an implementation you can explain from the outside before optimizing it.

Keep the wider goal in view: Repair the registration content so input and information remain clear across perception and reading conditions. A short observation with concrete evidence is more useful than a confident sentence with no reproduction path.

Test at 400 percent zoom, narrow width, forced colors, and reduced motion; record any lost content or operation. Hand the result to someone else and see whether the behavior is clear without an oral explanation.