* {
	box-sizing: border-box;
	margin-top: 0;
}

body {
	font-family: Verdana, sans-serif;
	font-size: 0.9em;
	margin: 0;
}

header h1,
footer {
	background-color: green;
	padding: 20px;
}

header,
footer {
	color: white;
}

section {
	margin: 5px;
	padding: 10px;
	background-color: lightblue;
}

section p {
	line-height: 1.5em;
}

section > section {
	background-color: orange;
}

section > section:nth-child(even) {
	background-color: yellow;
}

article {
	margin: 5px;
	padding: 10px;
	background-color: white;
}

nav ul {
	padding: 0;
	background-color: white;
	margin-left: 10px;
}

nav ul li {
	display: inline;
	margin: 5px;
}

footer p {
	text-align: center;
}