.screen-reader-shortcut {
	position: absolute;
	top: -1000em;
}

.screen-reader-shortcut:focus {
	background: #fff;
	box-shadow: 0 0 2px 2px rgba(0, 0, 0, .5);
	display: block;
	font-weight: 600;
	left: .25em;
	line-height: normal;
	outline: none;
	padding: 1em 2em;
	text-decoration: none;
	top: .25em;
	z-index: 100000;
}

body {
	color: #3f3f3f;
	font-family: system, -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", sans-serif;
	font-size: calc(18 / 16)rem;
	line-height: 1.65;
}

main {
	padding: 40px;
}

.home-link {
	background: rgba( 255, 255, 255, 0.5 );
	color: #1a1b1f;
	left: 0;
	padding: 20px;
	position: fixed;
	top: 0;
	z-index: 1;
}

main > article {
	max-width: 80ch;
}

main > article.centered {
	margin: 0 auto;
}

code {
	font-size: 1.2em;
}

pre {
	overflow: scroll;
	tab-size: 4;
}

.placeholder-content {
	align-items: center;
	align-content: center;
	display: flex;
	min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
	color: #32373c;
	clear: both;
	line-height: 1.25;
}

h1 {
	font-size: 3em;
}

h2 {
	font-size: 2em;
}

h3 {
	font-size: 1.5em;
	font-weight: 300;
	letter-spacing: .05em;
	margin: 2em 0 .75em;
	text-transform: uppercase;
}

.article-content-flow > * + * {
	margin-top: 1em;
}