body {
	margin: 40px auto;
	max-width: 800px;
	line-height: 1.6;
	font-size: 18px;
	color: #444;
	padding: 0 10px
}
h1, h2, h3 {
	line-height:1.2
}
code {
	background-color: pink;
	padding: 4px;
	border-radius: 7px;
}