Delegate independent tasks to specialized agents working concurrently with isolated context.
List & Grid Animation Principles
lists-grids
Use when animating lists, grids, tables, or collections of items to create smooth ordering, filtering, and loading states
SKILL.md
Full skill instructions
List & Grid Animation Principles
Apply Disney's 12 principles to lists and grids for smooth, organized motion.
Principles Applied to Lists & Grids
1. Squash & Stretch
List items compress slightly when grabbed for reorder. Grid items can stretch when expanding to fill space on filter.
2. Anticipation
Before list reorders, items briefly compress. Before filter removes items, they can shrink slightly. Prepares for change.
3. Staging
Item being dragged lifts above others (z-index + shadow). Filtered results highlight while others fade. Guide eye to relevant items.
4. Straight Ahead & Pose to Pose
Define states: entering, resting, reordering, exiting. Use pose-to-pose for predictable, controllable list animations.
5. Follow Through & Overlapping Action
Stagger item entrance: first item leads, others follow (30-50ms delay). Content within items lags behind item container.
6. Ease In & Ease Out
Item enter: ease-out. Item exit: ease-in. Reorder: ease-in-out. Stagger easing should feel like a wave, not mechanical.
7. Arcs
Reordering items should follow curved paths, not straight lines. Adds personality and organic feel to grid shuffles.
8. Secondary Action
While item moves (primary), placeholder appears (secondary), other items shift (tertiary). Coordinate the ensemble.
9. Timing
- Stagger delay: 30-75ms per item
- Item enter: 200-300ms
- Item exit: 150-200ms
- Reorder: 250-350ms
- Filter shuffle: 300-400ms
- Max total stagger: 500-800ms
10. Exaggeration
Dramatic filter transitions can scale items to 0 before removing. New items can overshoot position slightly. Make sorting visible.
11. Solid Drawing
Maintain consistent spacing during animations. Grid gaps should stay uniform. Item proportions should remain stable during transforms.
12. Appeal
Smooth list animations feel premium. Jarring reorders feel broken. Staggered entrances guide attention naturally. Users notice quality.
CSS Implementation
.list-item {
animation: itemEnter 250ms ease-out backwards;
}
.list-item:nth-child(1) { animation-delay: 0ms; }
.list-item:nth-child(2) { animation-delay: 50ms; }
.list-item:nth-child(3) { animation-delay: 100ms; }
/* continue pattern */
@keyframes itemEnter {
from {
opacity: 0;
transform: translateY(20px);
}
to {
opacity: 1;
transform: translateY(0);
}
}
.grid-item {
transition: transform 300ms ease-in-out,
opacity 200ms ease-out;
}
Key Properties
transform: translate, scaleopacity: enter/exitanimation-delay: staggergrid-template: layout shiftsorder: reordering
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