html {
    height: 100%;
}

body {
	height: 100%;
	margin: 0;
}

.container {
	max-width: 100%;
	height: 100%;
	background: #bbddff;
	text-align: center;
	display: flex;
	justify-content: center;
	align-items: center;
	margin: 0;
}

#start {
	vertical-align: middle;
	border-radius: 0.6rem;
	max-width: 240px;
	width: 50%;
}