Create a single-file HTML/CSS/JS animation that shows a sandwich being assembled layer by layer

Create a single-file HTML/CSS/JSanimation of a 4-stroke piston engine in cross-section

Prompt Playoffs on Instagram: "4 Als coded a Cat to be realistic Catoo PROMPT: "Create a single-file HTML/CSS/JS Canvas (800×800) where a cute cat is drawn step-by-step like a plotting pen. Start with a blank canvas, then animate lines appearing over time following the drawing path: first the head outline (circle), then two triangular ears, facial features (eyes, nose, small mouth with whiskers), body shape (rounded sitting pose), front legs, back legs, and a curved tail. Use smooth continuous s