Responsive JEE/NEET Physics Website

I need a fully-responsive website that presents my JEE and NEET Physics faculty in a sleek, modern, and clean style. The build is straightforward but must be polished:

• Home – a welcoming snapshot of our coaching approach, optimised for quick loading on mobile and desktop.
• Courses – includes detailed course descriptions, an intuitive enrollment form that pushes submissions straight to my email, and space to showcase authentic student testimonials.
• Contact Us – simple form plus clickable phone and location info so prospects can reach me without friction.

Please code with current best practices (HTML5, CSS3, lightweight JS or a familiar framework of your choice) so the layout adapts smoothly to every screen size. Once the three pages and the listed features are complete and tested, hand over the source files and any instructions I might need for future edits.