Technical Performance
Zero JS Motion Examples
Achieve buttery smooth browser-native performance at 120fps using the latest CSS specifications without a single line of client-side JavaScript.
Specification Coverage
Live Check
@view-timeline
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@starting-style
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dialog top-layer
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@view-transition
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01. Scroll-Driven Reveal
Utilizing @view-timeline for viewport-relative interpolation.
Cards enter the viewport with a sophisticated 3D rotation and opacity shift synced directly to the scroll progress bar.
/* CSS-only scroll reveal — zero JS runtime */
.card {
animation: card-enter linear both;
animation-timeline: view();
animation-range: entry 0% cover 50%;
}
@keyframes card-enter {
from { opacity: 0; transform: translateY(20px); }
to { opacity: 1; transform: none; }
}
Driven by animation-timeline: view() — pure CSS, no framework overhead.
02. Native Modal Transition
Leveraging the <dialog> element and @starting-style.
Native modal system that slides from the bottom with top-layer placement, managing focus and backdrop without JS listeners.
03. Fluid Accordion
Smooth height transitions with interpolate-size: allow-keywords.
Architecture Engine
keyboard_arrow_up
The core processing unit handles geometric computations and layout stabilization with sub-pixel precision.
Pipelines orchestrate view updates with timeline-derived checkpoints and keep rendering cost predictable for low-end GPUs.
Motion policies inherit reduced-motion preferences automatically and preserve accessibility defaults in each transition preset.
Expands from height: 0 to height: auto smoothly using browser-native interpolation for intrinsic sizing.
04. MPA View Transition
Seamless navigation via @view-transition directive.
Elements morph across full-page reloads by tagging shared entities. No SPA framework required for app-like continuity.