body{
	margin: 0;
}
#cube{
	width: 200px;
	height: 150px;
	background-color: red;
	position: absolute;
	top: 20px;
	left: 20px;
	z-index: -1;
}
#cube2{
	width: 50px;
	height: 1px;
	background-color: blue;
	position: absolute;
	top: 10px;
	right: 10px ;
	z-index: -1;
}