html,
body,
#wrapper{
	width: 100%;
	height: 100%;
	padding: 0;
	margin: 0;
}

#wrapper {
	display: flex;
	align-items: center;
	justify-content: center;
	background: #eee;
}

iframe {
	width: 
	flex: 1;
	border: 0;
}