HTML Opus #03
7.9
Evaluation
7.9 avg
8.5 physics accuracy
8.5 design quality
8 animation quality
5.5 slider ux
9 completeness
7.8 overall
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 is inverted — value=0 maps to crowns in air and value=100 to submerged, but the CSS rotation trick means dragging the thumb upward increases the value, so the physical drag direction matches intent; however, the HTML min/max orientation is technically inverted from the spec (top=air is correct here but only incidentally via CSS transform), and the label "Ziehen zum Eintauchen" (pull down to submerge) conflicts with the rotated control's actual top-to-bottom drag behavior.

11,551 output tokens · claude-opus-4-6 · end_turn

Slider is inverted — value=0 maps to crowns in air and value=100 to submerged, but the CSS rotation trick means dragging the thumb upward increases the value, so the physical drag direction matches intent; however, the HTML min/max orientation is technically inverted from the spec (top=air is correct here but only incidentally via CSS transform), and the label "Ziehen zum Eintauchen" (pull down to submerge) conflicts with the rotated control's actual top-to-bottom drag behavior.