React developer to fix responsive layout bugs & add a contact form to landing page

Hi there, I have a small marketing/landing page built in React (Create React App, plain CSS — no Tailwind) that is live but has a few issues I need fixed. It's a single-page site (hero, features, pricing, testimonials, footer) and the codebase is clean and fairly small, so this should be a quick job for the right person. What I need done: 1. Fix responsive layout bugs. On mobile (roughly under 480px) the hero heading overflows its container, the pricing cards stack awkwardly and overlap, and the navbar links don't collapse into the hamburger menu properly. I need the whole page to look clean on mobile, tablet, and desktop. 2. Add a working contact form. A simple "Get in touch" form in the footer with Name, Email, and Message fields, with basic validation (required fields + valid email). On submit it should POST to an email service — I'm fine with Formspree or EmailJS, whichever you recommend — and show a success/error message. No backend of my own to worry about. 3. Minor polish. Fix a couple of console warnings (unique key warnings in a list), and make sure the site still builds cleanly with `npm run build`. What I'll provide: - Access to the GitHub repo - The Formspree/EmailJS account details once we start Requirements: - Solid React + CSS / responsive design experience - Please test on real mobile widths, not just by resizing the desktop window - Clean, commented commits Deliverable: a single PR (or pushed commits) with all three items done and the site building without errors. Timeline: I'd like this wrapped up within about a week. Budget is fixed at $170 for the full scope above. When you apply, please briefly tell me how you'd handle the contact form (Formspree vs EmailJS) and share 1-2 examples of responsive React work you've done. Thanks!