ローディングアイコン animation

.loading {
	box-sizing: border-box;
	width: 100px;
	height: 100px;
	border-radius: 50%;
	border: 25px solid orange;
	border-right-color: transparent;
}
.loading:hover {
	animation: spin 0.8s forwards infinite linear;
}
@keyframes spin {
	0% {
		transform: none;
	}
	100% {
		transform: rotate(360deg);
	}
}