body {
	margin: 0;
	padding: 0;
	font-family: 'Roboto', Helvetica, sans-serif
}

.block {
	height: 600px;
	width: 400px;
	background-color: #7a92ba;
	color: #fff;
	text-align: center;
}

.block-1 {

}

.block-2 {
	margin-top: 1000px;
	margin-left: 2000px;
	margin-right: 500px;
}

.block-3 {
	margin-top: 1000px;
}

.block-3 {
	margin-top: 500px;
}

.is-visible {
	background-color: #a2bf8a;
}