body {
	margin: 0;
	font-family: Arial, sans-serif;
	background: #f7f7f7;
	color: #222;
}

header {
	background: #222;
	color: #fff;
	padding: 10px;
	text-align: center;
	display: flex;
	align-items: center;
	flex-direction: row;
	justify-content: center;
}

.logo {
	width: 50px;
	height: 50px;
	margin-right: 20px;
}

.container {
	display: flex;
	min-height: calc(100vh - 80px);
}

nav {
	width: 260px;
	background: #fff;
	border-right: 1px solid #ddd;
	padding: 20px;
}

nav a {
	display: block;
	padding: 10px 0;
	color: #333;
	text-decoration: none;
	font-weight: 600;
}

nav a:hover {
	color: #000;
}

main {
	flex: 1;
	padding: 40px;
}