安装
npx skills add https://github.com/dylantarre/animation-principles --skill navigation-menus
- Navigation & Menu Animation Principles
- Apply Disney's 12 principles to navigation for fluid, intuitive wayfinding.
- Principles Applied to Navigation
- 1. Squash & Stretch
- Menu items can compress slightly on click. Mobile hamburger icon lines should squash during transformation to X.
- 2. Anticipation
- Before dropdown opens, trigger item can lift or highlight. Sidebar toggle icon rotates slightly before panel slides.
- 3. Staging
- Active nav item should be clearly distinguished. Dropdown menus appear above other content via z-index and shadow. Focus hierarchy matters.
- 4. Straight Ahead & Pose to Pose
- Define clear states: closed, opening, open, closing. Each menu item has default, hover, active, selected poses.
- 5. Follow Through & Overlapping Action
- Dropdown items stagger in (20-30ms delay each). Submenu arrows rotate after text settles. Active indicator slides with slight overshoot.
- 6. Ease In & Ease Out
- Menu open:
- ease-out
- . Menu close:
- ease-in
- . Hover transitions:
- ease-in-out
- .
- cubic-bezier(0.4, 0, 0.2, 1)
- for Material-style.
- 7. Arcs
- Mobile nav sliding in from side should have slight arc. Menu indicator sliding between items can follow subtle curve path.
- 8. Secondary Action
- While dropdown expands (primary), shadow grows (secondary), parent item stays highlighted (tertiary). Chevron rotates.
- 9. Timing
- Dropdown open: 200-250ms
- Dropdown close: 150-200ms
- Hover highlight: 100-150ms
- Active indicator slide: 200-300ms
- Stagger per item: 20-40ms
- Hamburger morph: 300ms
- 10. Exaggeration
- Active indicator can overshoot and bounce back. Important nav items can pulse briefly for attention. Mega menus deserve bold entrances.
- 11. Solid Drawing
- Maintain consistent spacing during animations. Shadows should be consistent. Icons should stay crisp at all animation frames.
- 12. Appeal
- Smooth nav feels professional. Snappy responses build confidence. Navigation is used constantly, so invest in these micro-interactions.
- CSS Implementation
- .nav-dropdown
- {
- transform-origin
- :
- top
- ;
- transition
- :
- transform
- 200
- ms
- ease-out
- ,
- opacity
- 200
- ms
- ease-out
- ;
- }
- .nav-dropdown
- .open
- {
- transform
- :
- scaleY
- (
- 1
- )
- ;
- opacity
- :
- 1
- ;
- }
- .nav-indicator
- {
- transition
- :
- transform
- 250
- ms
- cubic-bezier
- (
- 0.4
- ,
- 0
- ,
- 0.2
- ,
- 1
- )
- ;
- }
- Key Properties
- transform
-
- translateX/Y, scaleY, rotate
- opacity
-
- fade menus
- height
- /
- max-height
-
- accordion menus
- clip-path
-
- reveal effects
- transform-origin
- dropdown direction
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