body, html {
	margin: 0;
	padding: 0;
	height: 100%;
}
body {
	background: #222;
}
.calc-main { /* center / center */
	position: absolute;
	top: 50%;
	left: 50%;
	margin-top: -75px;
	margin-left: -250px;
}
.calc-small {
	margin-left: -130px;
}

.input-row {margin:auto;
			width: 75%;
			background-color: tan;
			padding: 13px;
			font-size: 140%;
}

.operation-name{
	font-size: 80%;
}
	
.473-adds{
	margin-top: 75px;
}

.user-in {
	text-align: right;
}

.banner {
	color: white;
	font-size: 150%;
	margin-top: 25px;
	margin-bottom: 12px;
	text-align: center;
	
	
}