1. Marker in (test123), devtools → find where it landed.
2. You are inside the page's <style> block now — no spoiler below, that's the deal.
3. Everything you learned in Labs 5–7 applies. Adapt — don't copy/paste.
4. Extra credit: make the injection look like legitimate CSS and still execute.

No answer is published on purpose — the lesson kept this one as the student's drill. Take your time.