is applied to HTML5 in the same way it has always been: the new elements simply become selectors that can be manipulated in a stylesheet.

The significant difference is that if the browser does not understand a new element it will display it inline. This means that you will have to explicitly declare the layout of the new elements in a stylesheet for older browsers.

For the code example used in the previous article, I might apply CSS akin to the following:

body {
	margin: 0;
	background: #000;
	color: #fff;
	margin-left: 2em;
}
header a {
	color: red;
	text-decoration: none;
	margin-right: 2em;
}
aside {
	width: 300px;
	float: right;
	margin-left: 2em;
	}
time { 
	float: left;
	margin-right: 2em;
}
h4 { 
	display: inline;
}
section, footer {
	margin-top: 2em;
}
figure { 
	margin-left: 0;
}
figcaption {
	display: block;
	text-align: center;
}
aside p { 
	line-height: 1.8;
}