$logo-size: 3.5rem;

.loading-spinner {
	.pt-spinner:after {
		content: '';
		width: $logo-size;
		height: $logo-size;
		background-image: url('/images/logo_gray.png');
		background-size: $logo-size;
		display: block;
		position: relative;
		margin: auto;
		margin-top: -5rem;
		margin-bottom: 2rem;
	}
}

$logo-size: 3.5rem;

.loading-spinner {
	.pt-spinner:after {
		content: '';
		width: $logo-size;
		height: $logo-size;
		background-image: url('/images/logo_gray.png');
		background-size: $logo-size;
		display: block;
		position: relative;
		margin: auto;
		margin-top: -5rem;
		margin-bottom: 2rem;
		animation: pt-spinner-animation 4s infinite;
	}
}

Add a little animation to the custom loader to make it more interesting
[ADD] Add a little animation to the custom loader to make it more interesting
