.wrapper_tverd_beton { 

	width: 100%;
	margin: 0 auto;
	max-width: 700px;
	border: 10px solid green;
	box-sizing: border-box;
	padding: 10px;
	min-height: 350px;
}

td {
	padding: 1px !important;
	text-align: center;
}
th {
	text-align: center !important;
}
output {
	color: blue !important;
	font-size: 1em !important;
}
@media (max-width: 600px) {
	.wrapper_tverd_beton {
		padding: 5px !important;
		border: 5px solid green;
	}
	table {
		font-size: 0.85em !important;
	}

}