Activates deep web development expertise across the full stack, from semantic HTML and CSS Grid to HTTP/2 optimization and WCAG compliance. Handles the translation problem where stakeholders say "make it responsive" but you need to implement media queries, viewport meta tags, and fluid layouts. Covers 15 domains including browser engines, security headers, performance budgets, and accessibility testing. Most useful when you're context-switching between frontend DOM manipulation and backend protocol work, or when you need to debug cross-browser compatibility issues and implement web standards correctly.
npx skills add https://github.com/github/awesome-copilot --skill web-coder