This applies Disney's 12 animation principles to navigation menus, dropdowns, and sidebars. You get specific timing recommendations (200-250ms for dropdown opens, 20-40ms stagger delays between items), easing functions for different contexts, and concrete examples like hamburger icon morphs and active indicator slides with overshoot. The guidance covers everything from anticipation cues before a dropdown opens to secondary actions like shadow growth and chevron rotation. It's thorough without being prescriptive, giving you the principles and suggested timings so you can make navigation feel intentional instead of just functional. Most useful when you're building component libraries or design systems where these micro-interactions need to be consistent across an entire application.
npx skills add https://github.com/dylantarre/animation-principles --skill navigation-menus