Responsive HTML Pages Development

I need clean, standards-compliant HTML pages built from scratch. The final code must be responsive, load fast, and pass basic accessibility checks so it displays correctly on modern browsers and mobile devices. While I have general content and layout ideas, I’m open to your suggestions on structure, styling, and lightweight interactivity as long as everything stays purely front-end. Please share a sample of similar work, let me know how quickly you can turn around the first draft, and outline any assets or information you’ll need from me to get started.