.main {
	width: calc(100%);
	margin: 2rem 0;
}

.second {
	display: flex;
	flex-direction: column;
	align-items: center;
}

.third {
	border: 1px solid #ccc;
	width: 100%;
	max-width: 80rem;
	background-color: #eee;
	height: 600px;
}

@media (min-width: 900px) {
	.main {
		width: calc(100vw - 24rem);
		margin: 2rem 0 2rem calc(-50vw + 12rem + 50%);
	}
}
