✓ Two crowns ✓ Same mass, different density ✓ Vertical slider ✓ Slider works ✓ Slider controls crowns — Slider direction correct ✓ Full slider range ✓ Fall animation ✓ Water displacement ✓ Rising water level ✓ Splash effects ✓ Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water ✓ Gilded displaces more ✓ Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Slider direction is inverted (slider-vertical with direction:rtl maps value=0 to bottom/water and value=100 to top/air — opposite of spec), and the crown drawing is duplicated outside the clip region causing visual ghost artifacts, but physics, live values, splash, wave, and Heureka overlay are all solidly implemented.
Slider direction is inverted (slider-vertical with direction:rtl maps value=0 to bottom/water and value=100 to top/air — opposite of spec), and the crown drawing is duplicated outside the clip region causing visual ghost artifacts, but physics, live values, splash, wave, and Heureka overlay are all solidly implemented.