.spinner {
	display: inline-block;
	width: 30px;
	height: 30px;
	vertical-align: middle;
	margin-right: 10px;
	opacity: 0;
	transition: opacity 0.2s ease;
}
.spinner:after {
	content: " ";
	display: block;
	width: 20px;
	height: 20px;
	margin: 2px;
	border-radius: 50%;
	border: 3px solid #fff;
	border-color: #fff transparent #fff transparent;
	animation: lds-dual-ring 1.5s linear infinite;
}
@keyframes lds-dual-ring {
	0% {
		transform: rotate(0deg);
	}
	100% {
		transform: rotate(360deg);
	}
}