:root {
	--main-color: #24A1DE;
  --color-text: #111827;
  --color-text-muted: #6b7280;
	--nav-width: 60px;
}

* {
	box-sizing: border-box;
}

html, body {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
	background: White;
}

nav,
nav > a {
	display: flex;
	flex-direction: column;
	align-items: center;
}
nav {
	position: fixed;
	left: 0;
	top: 0;
	width: var(--nav-width);
	height: 100%;
	justify-content: space-around;
	align-items: center;
	background: #24A1DE;
}
nav > a {
	justify-content: center;
}

article {
	position: fixed;
	top: 0;
	left: var(--nav-width);
	width: calc(100% - var(--nav-width));
	height: 100%;
	overflow: auto;
}

a {
	text-decoration: none;
	color: inherit;
}

.sticky {
	position: sticky;
	top: 0;
	background: Gainsboro;
}