# QA: Chat Customization (CSS) — Mastra

## Prerequisites

- Demo is deployed and accessible

## Test Steps

- [ ] Navigate to `/demos/chat-customization-css`
- [ ] Verify the chat wrapper has class `chat-css-demo-scope`
- [ ] Verify the chat background is the warm cream (`#fff8f0`) from theme.css
- [ ] Send a message; verify the user bubble is hot-pink serif
- [ ] Verify the assistant bubble is amber-boxed monospace

## Expected Results

- Theme is scoped to the demo wrapper only (other pages unaffected)
