.wrapper_interpol { 
	width: 100%;
	margin: 0 auto;
	max-width: 900px;
	border: 10px solid #9932CC;
	box-sizing: border-box;
	padding: 10px;
	min-height: 350px;
}
.column1 {
	width: 48%;
	float: left;
}
.column2 {
	width: 48%;
	float: right;
}
legend {
	margin: 20px 0 2px 0 !important;
}
td {
	padding: 1px !important;
	text-align: center;
}
th, thead {
	text-align: center !important;
	position: sticky;
  	top: -2px;
  	background: white;
  	vertical-align: middle !important;
}
table {

	font-size: 0.9em !important;
}
output {
	color: blue !important;
	font-size: 1em !important;
}


@media (max-width: 600px) {
	.wrapper_interpol {
		padding: 5px !important;
		border: 5px solid #9932CC;
	}

	.input-group-addon {
		padding: 5px !important;
	}
}