body {
	padding-top: 50px;
	background: #F5F5F5;
	color: #FFF;
	font-family: sans-serif;
}

.box {
	margin: auto;
	width: 300px;
	height: 300px;
	border-radius: 15px;
	background: steelblue;
	cursor: pointer;
	-webkit-duration: .3s;
	-moz-duration: .3s;
	-o-duration: .3s;
	transition-duration: .3s;
 }

.box:hover {
	background: lightcoral;
	border-radius: 50%;
}