.preloader-background {
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: #eee;
	
	position: fixed;
	z-index: 100;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;	
}








.collapsible header {
    background-color: #546e7a !important;
}
