I maintain a small HTML5 user-manual site and I’d like a quick pass on its look and feel—nothing drastic, just a few polish points. What I need done • Keep the header fixed so it stays visible while the page scrolls. • Shift the palette to a balanced, high-legibility contrast—think soft greys or pastel tones against darker text—so WCAG readability improves without making the page harsh. • Swap the flat backdrop for a subtle, lightweight gradient that complements the new palette and loads fast. • Tidy any layout quirks you uncover, but keep the markup lean: semantic HTML5 and one external CSS file. Deliverables 1. Updated CSS file (commented where changes start/end). 2. Any minimal HTML edits, clearly marked. 3. A short “before / after” screenshot or screencast so I can spot-check the tweaks. Acceptance Everything needs to look consistent in the latest Chrome, Firefox, Safari, and Edge, scale smoothly from 320 px to desktop widths, and ship without extra libraries—vanilla CSS only. This is a concise job for someone with an eye for detail in responsive styling. If that sounds like you, let’s get it wrapped up quickly.