Website Design vs Web Development
Design defines the experience; development makes it work. Both depend on clear requirements.
What design decides
Design addresses structure, visual identity, page hierarchy, and interaction. Wireframes can clarify where content belongs; detailed layouts show how it looks on different screens. Realistic content helps expose spacing and readability issues before coding.
What development delivers
Development implements navigation, responsive behavior, forms, data connections, and page delivery. It also handles error states and technical constraints. A design file is not a live website, and a working page still needs careful review against the approved design.
Where they overlap
Accessibility, mobile usability, and performance are shared responsibilities. Designers should plan clear controls and sensible media; developers should preserve semantics and responsive behavior. Agree whether your project includes design, implementation, or both so that handover is unambiguous.