#main_loader {
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background-color: #eee;
	opacity: 0.7;
	display: block;
	z-index: 99999999999;
}


#loader_rotation {
	position: absolute;
	left: calc(50% - 75px);
	top: calc(50% - 75px);
	/* transform: translate(-50%, -50%); */
	-webkit-animation: loader_rotation 4s infinite linear;
}

@-webkit-keyframes loader_rotation {
	from {
			-webkit-transform: rotate(0deg);
	}
	to {
			-webkit-transform: rotate(359deg);
	}
}