Design finalization: generates production-quality Pretext-native HTML/CSS. (gstack)
Install
npx skills add garrytan/gstack --skill design-htmlnpx skills add garrytan/gstack --skill design-html -a claude-code -gnpx skills add garrytan/gstack --skill design-html -a codex -ggemini skills install https://github.com/garrytan/gstack.git --path design-htmlgh skill install garrytan/gstack design-htmlgit clone --depth 1 https://github.com/garrytan/gstack /tmp/garrytan__gstack
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/garrytan__gstack/design-html ~/.claude/skills/design-html # Claude Code
cp -R /tmp/garrytan__gstack/design-html ~/.agents/skills/design-html # Codex, Cursor, Gemini CLI, Copilot, OpenCode