✓ 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 — label reads "Senken▲ / ▼Tauchen" but the vertical-lr+direction:rtl CSS combined with value=0 at top means dragging up increases the value and sinks the crowns, which is counter-intuitive; physics, visuals, and live values are otherwise excellent.
Slider direction is inverted — label reads "Senken▲ / ▼Tauchen" but the vertical-lr+direction:rtl CSS combined with value=0 at top means dragging up increases the value and sinks the crowns, which is counter-intuitive; physics, visuals, and live values are otherwise excellent.