I want to add a straightforward, fully responsive contact form to my site. A simple, modern look with clear spacing and accessible colour contrast is all that’s required—no elaborate UI mocks to follow. Key points I’d like you to cover: • Core contact fields (name, email, subject, message); I’ll confirm the final list once we begin. • A “Remember me” checkbox so returning visitors don’t have to re-enter their details. • Inline client-side validation with neat, readable error messages. • Lightweight, semantic HTML5 and CSS3, plus vanilla JS (or a minimal React setup if you prefer) that drops cleanly into an existing page. • Code that renders perfectly on mobile, tablet, and desktop. On delivery I expect the completed form files, any supporting assets, and brief setup notes so I can plug everything straight in. Feel free to ask if you need extra details before starting—quick answers are guaranteed so we can wrap this up fast.