@layer a, b;
/* a.css */

@layer b{

.box {
	animation: BOX;
	animation-duration: 0s;
	animation-fill-mode: both;
}

@keyframes BOX {
	0%, 100% {
		background-color: green;
	}
}
}
/* b.css */

@layer a{

.box {
	animation: BOX;
	animation-duration: 0s;
	animation-fill-mode: both;
}

@keyframes BOX {
	0%, 100% {
		background-color: red;
	}
}
}
