html, body {
	height: 100%;
}
body {
	font-family: sans-serif;
	margin: 0;
	display: grid;
	grid-template-columns: max(300px, 20%) auto;
	background: #ccc;
}

main article {
	max-width: 1800px;
	box-shadow: 0 0 20px #777;
	padding: 0 50px;
	margin: 0 auto;
	background: white;
	min-height: 100%;
	overflow: auto;
}

main article h1,
main article h2 {
	margin-left: -20px;
}

header {
	/* sidebar */
	background: #6c4e7b;
	z-index: 1;
}

nav a {
	color: white;
}
nav a {
	padding: 10px 0;
	display: block;
	width: 100%;
	text-align: center;
	text-decoration: none;
	font-size: 1.5em;
	transition: 0.2s all;
}
nav a:hover {
	background: #ffffff44;
}

#bune {
	object-fit: contain;
	display: block;
	width: min(100%, 150px);
	margin: 30px auto 50px auto;
}