.loader {
	border: 5px solid #f3f3f3; /* Light grey */
	border-top: 5px solid #3498db; /* Blue */
	border-radius: 50%;
	width: 40px;
	height: 40px;
	animation: spin 2s linear infinite;
	display: none;
	margin: 0 auto;
}

@keyframes spin {
	0% { transform: rotate(0deg); }
	100% { transform: rotate(360deg); }
}