html,
body {
	margin: 0;
	padding: 0;
	width: 100vw;
	height: 100vh;
	overflow: hidden;
	background: #000;
}

img {
	user-select: none;
}

.flipbook-viewport {
	position: relative;
	width: 100%;
	height: 100%;
	overflow: hidden;

	display: flex;
	justify-content: center;
	align-items: center;
}

.container {
	display: flex;
	justify-content: center;
	align-items: center;

	height: 95%;
	max-height: 95%;

	overflow: hidden;

	aspect-ratio: 4/3;
}

.flipbook {
	width: 95%;
	max-height: 95%;
	display: flex;
	justify-content: right;
	align-items: center;

	box-shadow: 0 0 10px #fff;
	box-sizing: border-box;
}

.page {
	flex: 0 0 50%;
	display: flex;
	justify-content: center;
	align-items: center;
}

.page.double {
	flex-basis: 100%;
}

.page img {
	max-width: 100%;
	max-height: 100%;
	object-fit: contain;
	display: block;
}