div
{
	border: 2px solid black;
	position: absolute;
}

.roof
{
	background-color: lightblue;
	height: 486px;
	width: 486px;
}

.green
{
	background-color: limegreen;
	height: 200px;
	width: 200px;
	left: 25px;
	top: 25px;
}

.blue
{
	background-color: royalblue;
	opacity: 0.8;
	height: 200px;
	width: 200px;
	right: 25px;
	top: 25px;
}

.chocolat
{
	background-color: sienna;
	opacity: 0.8;
	height: 200px;
	width: 200px;
	left: 25px;
	bottom: 25px;
}

.yellow
{
	background-color: yellow;
	height: 200px;
	width: 200px;
	right: 25px;
	bottom: 25px;
}