* {
	box-sizing: border-box;
}
body {
	margin: 0;
	font-family: sans-serif;
	line-height: 1.5;
}
h1,
h2,
h3 {
	line-height: 1.1;
	font-weight: 300;
	margin: 0;
}
h1 {
	font-size: 42px;
	padding: 35px 0 calc(35px - 16px) 0;
}
h2 {
	font-size: 32px;
	padding: 28px 0 calc(26px - 16px) 0;
}
img {
	max-width: 100%;
}
.container {
	display: grid;
	grid-template-columns: 400px 1fr;
	grid-template-rows: 285px 1fr;
	grid-gap: 50px;
}
#navbar {
	position: fixed;
	top: 0;
	left: 0;
	grid-column: 1 / span 1;
	grid-row: 1 / span 2;
	border-right: 1px solid #777;
	width: 400px;
	height: 100vh;
}
.navbar_header {
	padding-left: 50px;
}
.header-title {
	padding: 26px;
}
#main-doc {
	grid-column: 2 / span 1;
	grid-row: 1 / span 2;
	margin-right: 50px;
}
@media screen and (max-width: 900px) {
	.container {
		grid-gap: 0;
	}
	#navbar {
		grid-row: 1 / span 1;
		grid-column: 1 / span 2;
		width: 100%;
		position: static;
	}
	#main-doc {
		grid-row: 2 / span 1;
		grid-column: 1 / span 2;
		margin-left: 50px;
	}
	.navbar_header {
		text-align: center;
	}
	.navbar__ul {
		height: 200px;
		overflow: auto;
		border-top: 2px solid #5a5a5a;
		border-bottom: 2px solid #5a5a5a;
	}
}
.main-section {
	max-width: 70ch;
}
.main-section:last-child {
	margin-bottom: 60px;
}
.navbar__ul {
	padding: 0;
	margin: 0;
	list-style: none;
}
.navbar__item {
	border-top: 1px solid black;

	padding: 16px;
	padding-left: 50px;
}
.navbar__item:last-child {
	border-bottom: 1px solid black;
}
@media screen and (max-width: 900px) {
	.navbar__ul :first-child {
		border-top: 0;
	}
	.navbar__ul :last-child {
		border-bottom: 0;
	}
}
.navbar__link {
	text-decoration: none;
	color: #777;
	font-size: 16px;
}
.navbar__link:hover {
	text-decoration: underline;
}
.inline-code {
	background-color: #eee;
	padding: 4px;
}
.block-code {
	background-color: #eee;
	display: block;
	width: 100%;
	border-left: 5px solid lightseagreen;
	padding: 20px;
	font-size: 16px;
	margin-bottom: 16px;
}