body, html {
	margin: 0;
	padding: 0;
	height: 100%;
}
body {
}
.calc-main { /* center / center */
	position: absolute;
	top: 22rem;
	left: 50%;
	margin-top: -230px;
	margin-left: -250px;
}
.calc-small {
	margin-left: -130px;
}

h1 {
font-family: monospace;
text-align: center;

}

.article {
	padding: 400px 20% 0;
	font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}