I need the entire on-boarding flow of my site—registration form, user tutorials, and the welcome screen—rendering flawlessly on mobile devices. At the moment the layouts break on smaller view-ports, so your first task is to tighten up the CSS (media queries, flexible grids, touch-friendly controls) until each step feels native on phones and tablets. Once the screens scale cleanly, I’d like smooth fade transitions wired into every navigation point inside that flow and anywhere it hands off to the rest of the site. Snappy yet subtle is the goal: no jank, no noticeable repaint. You’ll work in the existing codebase, keep all current styling conventions, and deliver: • Updated responsive stylesheets or components • JavaScript (or framework-specific) hooks that trigger the fade effect • A short read-me explaining where you touched the code and how to extend the animation to future pages