#_main {
	background-image: url(/asset/image/about/ir/main-bg.jpg);
}

._number th,
._number td {
	border-width: 1px;
	padding: 1.5rem;
	font-weight: normal;
}

._number tr:nth-child(1) th,
._number tr:nth-child(1) td {
	padding: 1rem;
	font-weight: bold;
}

._first th,
._number tr:nth-child(even) {
	background-color: #f8f8f8;
}

._section {
	font-size: 2.1875rem;
}

._section_unit {
	font-size: 1.25rem;
}

iframe {
	height: 28rem;
}

#visualization {
	height: 20rem;
}