#name {
	font-size: 2em;
	color: white;
	font-weight: bold;
	text-align: center;
	margin: 20px auto;
	padding: 20px;
}

#calculator {
	width: 260px;
	height: 380px;
	margin: 0px auto;
	padding: 20px;
	font-family: 'Arial', sans-serif;
}

.top span.clear {
	background-color: #dbdcde;
	float: left;
	width: 45px;
	height: 45px;
	border: 0px solid #888888;
	border-radius: 50%;
	margin-left: 8px;
	text-align: center;
	line-height: 45px;
	text-align: center;
	font-size: 1.4em;
	color: black;
	cursor: pointer;
	transition: all 0.3s ease;
}

.top .display {
	height: 45px;
	width: 150px;
	margin-right: 5px;
	float: right;
	margin-bottom: 10px;
	line-height: 45px;
	padding: 0 15px 0 10px;
	font-size: 28px;
	text-align: right;
	overflow: hidden;
}

.keys span {
	background-color: #dbdcde;
	float: left;
	width: 60px;
	height: 60px;
	border-radius: 50%;
	text-align: center;
	margin: 6px;
	line-height: 60px;
	text-align: center;
	font-size: 2em;
	cursor: pointer;
	transition: all 0.3s ease;
}

.keys span:hover, .keys span:active,
.top span.clear:hover, .top span.clear:active {
	background-color: #888888;
	color: #fff;
}

.unselectable {
	user-select: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	-o-user-select: none;
}