✓ 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 (min=0 at left/top of rotated track maps crown to air, but dragging toward bottom increases value which lowers crowns — however the CSS rotation makes visual top correspond to high values, meaning visual-top = crowns-in-water, which is backwards); no autonomous fall animation — crowns only move via slider drag.
Slider direction is inverted (min=0 at left/top of rotated track maps crown to air, but dragging toward bottom increases value which lowers crowns — however the CSS rotation makes visual top correspond to high values, meaning visual-top = crowns-in-water, which is backwards); no autonomous fall animation — crowns only move via slider drag.