body {
	background-color: #FFFFFF;
	margin-top: 0;
	margin-bottom: 0;
	margin-left: 0;
	margin-right: 0;
}

#stage {
	visibility: visible;
	height: 500px;
	width: 500px;
	overflow: hidden;
	background-color: #0000FF;
}

#ball {
	background-color: #00FFFF;
	height: 50px;
	width: 50px;
	margin: 0px;
	border-radius: 50%;
	position: relative;
}