@media only screen and (max-width: 600px) {
	#main {
		padding: 0 1em;
	}
}

@media only screen and (min-width: 600px) {
	#top_nav,
	#rightmenu,
	#main {
		margin: auto;
		max-width: 50em;
	}
}

	#header h1 a {
		display: block;
		text-align: center;
	}

	a {
		text-decoration: none;
	}

	#header h1 a,
	.postTitle a {
		text-decoration: none;
		color: rgb(57, 58, 52);
	}

	#header {
		border-bottom: 1px solid black;
	}

	.postTitle {
		text-align: center;
	}

	p {
		line-height: 1.6em;
	}

	#post_detail {
		width: 100%;
	}

	#nav_left li {
		display: none;
	}

	#nav_left li.navbar-branding {
		display: list-item;
	}

	#cnblogs_post_body {
		padding-bottom: 2em;
		margin-bottom: 2em;
		border-bottom: 4px solid black;
	}