body {
	background-color: black;
}

p {
	color: red;
}

a {
 	text-decoration: none;
}

@media screen and (min-width: 400px) {
	a {
		color: #ff0;
		border-bottom: 1px solid #ff0;
		/* critical */
	}
}

section {
	position: absolute;
}

@media screen and (min-width: 400px) {
	ul div {
		float: left;
		/* critical */
	}

	section:before {
		content: ' ';
		/* critical */
		clear: both;
		display: block;
	}
}

h1 {
	font-size: 3em;
	font-weight: bold;
}