I’m looking for a developer who can craft a small but complete multi-page web application built only with HTML, CSS, and JavaScript. The goal is for me to study clean, well-structured code, so make everything easy to read, well commented, and logically organized. Here’s what I need: • 4–5 linked pages (e.g., Home, About, Gallery, Contact), each loading as a full HTML document rather than via AJAX or framework routing. • A vibrant, colorful design theme—think bright palettes, playful typography, and subtle animations that showcase modern CSS without relying on external libraries. • Basic interactive touches in JavaScript such as a collapsible navigation menu, form validation on the contact page, and a simple image slider or modal in the gallery. • Mobile-friendly layout using pure CSS flexbox or grid. • A short README explaining the project structure, build/run steps (if any), and where to look in the code to understand key concepts. I don’t need back-end integration or advanced features; this is purely a front-end learning project. Deliver the full source folder ready to open in a browser, plus a quick screen-capture video or screenshots showing the pages in action for easy reference.