OnomaUI

zakkuri motion

The motion for "split wide open".

ざっくり1 motionOfficial

Sample

Split wide open

Open a panel wide

Flips open 120° around its left edge.

Duration
0.9s
Repeats
No
Easing
ease-in-out
Animates
3D turn rotateY
Show CSS
@keyframes onoma-zakkuri {
  0% { transform: perspective(400px) rotateY(0deg); }
  100% { transform: perspective(400px) rotateY(-120deg); }
}

.onoma-zakkuri {
  animation: onoma-zakkuri 0.9s ease-in-out both;
  transform-origin: 0% 50%;
}

/* Reduced motion: no motion */
@media (prefers-reduced-motion: reduce) {
  .onoma-zakkuri { animation: none; }
}

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