/* https://codepen.io/umng/pen/wZzbbQ */

.spanner{
	position:fixed;
	top: 50%;
	left: 0;
	background: #2a2a2a55;
	width: 100%;
	display:block;
	text-align:center;
	height: 300px;
	color: #FFF;
	transform: translateY(-50%);
	z-index: 1000;
	visibility: hidden;
}

.overlay{
	position: fixed;
	width: 100%;
	height: 100%;
	background: rgba(0,0,0,0.5);
	visibility: hidden;
	top: 0;
	z-index: 999;
}

.loader,
.loader:before,
.loader:after {
	border-radius: 50%;
	width: 2.5em;
	height: 2.5em;
	-webkit-animation-fill-mode: both;
	animation-fill-mode: both;
	-webkit-animation: load7 1.8s infinite ease-in-out;
	animation: load7 1.8s infinite ease-in-out;
}
.loader {
	color: #ffffff;
	font-size: 10px;
	margin: 80px auto;
	position: relative;
	text-indent: -9999em;
	-webkit-transform: translateZ(0);
	-ms-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-animation-delay: -0.16s;
	animation-delay: -0.16s;
}
.loader:before,
.loader:after {
	content: '';
	position: absolute;
	top: 0;
}
.loader:before {
	left: -3.5em;
	-webkit-animation-delay: -0.32s;
	animation-delay: -0.32s;
}
.loader:after {
	left: 3.5em;
}
@-webkit-keyframes load7 {
	0%,
	80%,
	100% {
		box-shadow: 0 2.5em 0 -1.3em;
	}
	40% {
		box-shadow: 0 2.5em 0 0;
	}
}
@keyframes load7 {
	0%,
	80%,
	100% {
		box-shadow: 0 2.5em 0 -1.3em;
	}
	40% {
		box-shadow: 0 2.5em 0 0;
	}
}

.show{
	visibility: visible;
}

.spanner, .overlay{
	opacity: 0;
	-webkit-transition: all 0.3s;
	-moz-transition: all 0.3s;
	transition: all 0.3s;
}

.spanner.show, .overlay.show {
	opacity: 1
}