mon-entreprise/source/components/Overlay.css

#overlayWrapper {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(255, 255, 255, 0.86);
	z-index: 1;
}
#overlayContent {
	background: white;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	margin: 1em;
	padding: 1em;
	border-radius: 0.3em;
	border: 2px solid #333350;
	position: fixed;
	min-height: 6em;
}

@media (min-width: 600px) {
	#overlayContent {
		width: 70%;
		transform: translateX(-50%) translateY(-50%);
		top: 50%;
		left: 50%;
		max-width: 40em;
	}
}