:root {
	--section-header-color: hsl(213, 100%, 31%);
	--section-header-bgcolor: hsl(213, 34%, 88%);
}

html {
	box-sizing: border-box;
}

*,
*:before,
*:after {
	box-sizing: inherit;
}

body {
	max-width: 90ch;
	margin: auto;
	padding-inline: 1rem;
	line-height: 1.4;
}

h1,
h2 {
	line-height: 1;
}

h4 {
	font-size: 1.2em;
}

h5 {
	font-size: 1em;
}

section {
	margin-bottom: 4rem;
}

section#intro {
	margin-inline: -1rem;
}

section#intro img {
	display: flex;
	max-width: 100%;
	margin-block: 0;
}

section#intro h1 {
	display: none;

	margin-block: 0;
	padding-block: 1rem;
	padding-inline: 1rem;

	color: var(--section-header-color);

	background-color: var(--section-header-bgcolor);
}

section#intro p,
section#intro ul {
	margin-inline: 1rem;
}

section h2 {
	margin-inline: -1rem;
	padding-block: 0.5rem;
	padding-inline: 1rem;

	/*color: white;*/
	color: var(--section-header-color);

	background-color: var(--section-header-bgcolor);
	background-image: url(../img/section-bg.png);
	background-repeat: no-repeat;
	background-position: right;
	background-size: contain;
}

article {
	margin-bottom: 4rem;
	margin-inline: -1rem;
	padding-bottom: 0.5rem;
	padding-inline: 1rem;

	border-top: thin solid gray;
	border-left: thin solid gray;
}

div.field-author span.field-label {
	font-style: italic;
}

div.field-links>h4,
div.field-notes>h4 {
	margin-bottom: 1rem;
}

p.note {
	font-size: 0.9em;
	font-style: italic;
}

table {
	border-collapse: collapse;

	min-width: 75%;
	margin-block: 1rem;

	font-family: sans-serif;
	font-size: 0.9rem;
}

table caption {
	font-style: italic;
	text-align: left;
}

table th {
	padding-block: 0.25rem;
	padding-inline: 0.5rem;
	background: #b8cce5;
}

table td {
	padding-block: 0.25rem;
	padding-inline: 0.5rem;
	text-align: center;
}

table td.left {
	text-align: left;
}

table td.right {
	text-align: right;
}

details {
	margin-bottom: 1rem;
	border: thin solid gray;
}

details summary {
	padding: 0.5rem;
}

details summary h4 {
	cursor: pointer;
	display: inline;
}

details div.details-content {
	padding-inline: 1rem;
}

details details {
	margin-right: 0;
	margin-left: 0.5rem;
	padding-right: 0;
}

p.stattestquestion {
	font-weight: bold;
}

article.stattests blockquote {
	margin-right: 0;
	margin-left: 1rem;
	padding-right: 0;
	padding-left: 1rem;
}

article.stattests blockquote pre {
	margin-block: 1rem;
	margin-inline: -1rem;
	padding-block: 0.5rem;
	padding-inline: 1rem;

	background-color: #EEEEEE;
}

a.workedexample::before {
	content: '\21D7\A0';
}

table.stattesttable th,
table.stattesttable td {
	padding-block: 0.55rem;
	padding-inline: 1rem;
	text-align: left;
}

article:target {
	background-color: #dddddd;
}