/* Absolute Center Spinner */
.loading {
	position: fixed;
	z-index: 999;
	height: 2em;
	width: 2em;
	overflow: show;
	margin: auto;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
}

	/* Transparent Overlay */
	.loading:before {
		content: '';
		display: block;
		position: fixed;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		background: radial-gradient(rgba(20, 20, 20,.8), rgba(0, 0, 0, .8));
		background: -webkit-radial-gradient(rgba(20, 20, 20,.8), rgba(0, 0, 0,.8));
	}

	/* :not(:required) hides these rules from IE9 and below */
	.loading:not(:required) {
		/* hide "loading..." text */
		font: 0/0 a;
		color: transparent;
		text-shadow: none;
		background-color: transparent;
		border: 0;
	}

		.loading:not(:required):after {
			content: '';
			display: block;
			font-size: 10px;
			width: 1em;
			height: 1em;
			margin-top: -0.5em;
			-webkit-animation: spinner 1500ms infinite linear;
			-moz-animation: spinner 1500ms infinite linear;
			-ms-animation: spinner 1500ms infinite linear;
			-o-animation: spinner 1500ms infinite linear;
			animation: spinner 1500ms infinite linear;
			border-radius: 0.5em;
			-webkit-box-shadow: rgba(255,255,255, 0.75) 1.5em 0 0 0, rgba(255,255,255, 0.75) 1.1em 1.1em 0 0, rgba(255,255,255, 0.75) 0 1.5em 0 0, rgba(255,255,255, 0.75) -1.1em 1.1em 0 0, rgba(255,255,255, 0.75) -1.5em 0 0 0, rgba(255,255,255, 0.75) -1.1em -1.1em 0 0, rgba(255,255,255, 0.75) 0 -1.5em 0 0, rgba(255,255,255, 0.75) 1.1em -1.1em 0 0;
			box-shadow: rgba(255,255,255, 0.75) 1.5em 0 0 0, rgba(255,255,255, 0.75) 1.1em 1.1em 0 0, rgba(255,255,255, 0.75) 0 1.5em 0 0, rgba(255,255,255, 0.75) -1.1em 1.1em 0 0, rgba(255,255,255, 0.75) -1.5em 0 0 0, rgba(255,255,255, 0.75) -1.1em -1.1em 0 0, rgba(255,255,255, 0.75) 0 -1.5em 0 0, rgba(255,255,255, 0.75) 1.1em -1.1em 0 0;
		}

/* Animation */

@-webkit-keyframes spinner {
	0% {
		-webkit-transform: rotate(0deg);
		-moz-transform: rotate(0deg);
		-ms-transform: rotate(0deg);
		-o-transform: rotate(0deg);
		transform: rotate(0deg);
	}

	100% {
		-webkit-transform: rotate(360deg);
		-moz-transform: rotate(360deg);
		-ms-transform: rotate(360deg);
		-o-transform: rotate(360deg);
		transform: rotate(360deg);
	}
}

@-moz-keyframes spinner {
	0% {
		-webkit-transform: rotate(0deg);
		-moz-transform: rotate(0deg);
		-ms-transform: rotate(0deg);
		-o-transform: rotate(0deg);
		transform: rotate(0deg);
	}

	100% {
		-webkit-transform: rotate(360deg);
		-moz-transform: rotate(360deg);
		-ms-transform: rotate(360deg);
		-o-transform: rotate(360deg);
		transform: rotate(360deg);
	}
}

@-o-keyframes spinner {
	0% {
		-webkit-transform: rotate(0deg);
		-moz-transform: rotate(0deg);
		-ms-transform: rotate(0deg);
		-o-transform: rotate(0deg);
		transform: rotate(0deg);
	}

	100% {
		-webkit-transform: rotate(360deg);
		-moz-transform: rotate(360deg);
		-ms-transform: rotate(360deg);
		-o-transform: rotate(360deg);
		transform: rotate(360deg);
	}
}

@keyframes spinner {
	0% {
		-webkit-transform: rotate(0deg);
		-moz-transform: rotate(0deg);
		-ms-transform: rotate(0deg);
		-o-transform: rotate(0deg);
		transform: rotate(0deg);
	}

	100% {
		-webkit-transform: rotate(360deg);
		-moz-transform: rotate(360deg);
		-ms-transform: rotate(360deg);
		-o-transform: rotate(360deg);
		transform: rotate(360deg);
	}
}