# Countdown for i in range(3, 0, -1): print(f"i...") time.sleep(1)
| Issue | Cause | Fix | |-------|-------|-----| | No sound | Browser autoplay policy | Require a user click first (launch button works) | | Multiple countdowns running | Interval not cleared before restart | Always clearInterval in abort/reset | | Rocket moves off-screen | translateY(-300px) limited by parent overflow | Set overflow: visible on container | | Abort doesn't stop sound | Audio context continues | Store audio context variable and call close() | 3-2-1 blast off simulator script
: A timed function that iterates from 3 down to 1. Each interval triggers a UI update and a "beep" audio effect to build anticipation. Visual Feedback : # Countdown for i in range(3, 0, -1): print(f"i