I mixed up compound selectors a few times — like writing #about, #projects h2 when I actually meant #about h2, #projects h2. I also accidentally left most of my mobile‑only CSS rules outside the media query’s closing brace, which made those styles apply to every screen size instead of just phones. I ran into a few small typos too (like heade instead of header, missing semicolons, and max-width: 100 instead of 100%). I also started adding tab-style navigation elements, but I’m not done with them yet — they still need proper styling and behavior. Next, I need to fix the media query nesting so the mobile-only styles actually stay inside the mobile block, then test the responsive layout properly using the browser’s device toolbar. After that, I want to add a hover effect (maybe a small zoom or glow) on the project images for a bit more polish. Once the responsive design feels solid, I’ll call this v1 complete 🎉