:root { --accent: #b39ddb; }

* { box-sizing: border-box; }

html { background: #fff; }

body {
	margin: 0;
	padding: 16px;
	font: 24px/1.45 Arial, Helvetica, sans-serif;
}

.box,
.navbar {
	max-width: 1400px;
	margin: 0 auto;
}

.box { border: 1px solid #000; }

.box + .box { margin-top: 12px; }

.boxbar {
	padding: 10px 14px;
	background: var(--accent);
}

.boxbar :is(h1, h2) {
	margin: 0;
	font-size: 24px;
	line-height: 30px;
	font-weight: bold;
	color: #fff;
}

.boxcontent { padding: 16px 18px 18px; }
.boxcontent p { margin: 0 0 16px; }
.boxcontent p:last-child { margin-bottom: 0; }
.boxcontent ul { margin: 0; padding-left: 0; list-style: none; }
.boxcontent li { margin: 0 0 6px; }
.boxcontent pre {
	overflow-x: auto;
	width: fit-content;
	max-width: 100%;
	margin: 0 auto;
	font-size: 16px;
	line-height: 1.4;
}

.navbar {
	height: 52px;
	margin-bottom: 12px;
	display: flex;
	justify-content: center;
	background: var(--accent);
	border: 1px solid #000;
}

.navbar a {
	display: flex;
	align-items: center;
	padding: 0 clamp(10px, 2vw, 18px);
	color: #fff;
	text-decoration: none;
}

a { color: #0000cc; }
.boxcontent a:is(:active, :visited) { color: var(--accent); }

::selection {
	background: var(--accent);
	color: #2b0808;
}