<!doctype html>
<html>
<head>
<title>Margin negative</title>
<link href="/assets/reset.css" rel="stylesheet">
<link href="setup.css" rel="stylesheet">
<link href="style.css" rel="stylesheet">
</head>
<body>
<section>
<p>This is some text in the first element.</p>
<p>There can be multiple elements within it, maybe even that wrap to multiple lines.</p>
</section>
<section>
<p>And some more in the second element.</p>
</section>
<section>
<p>Then a third one, too.</p>
</section>
</body>
</html>
index.html
/* Same as before. */
body {
font-family: sans-serif;
padding: 20px;
}
section {
border-top: solid black 4px;
padding: 10px;
}
section:nth-child(1) { background-color: deepskyblue; }
section:nth-child(2) { background-color: gold; }
section:nth-child(3) { background-color: tomato; }
setup.css
/* This applies to 2 and 3, as before. */
section:not(:first-child) { margin-top: 40px; }
/* But this negates/subtracts some of it. */
section:first-child { margin-bottom: -20px; }
/* You can even pull things *out* from their bounds. */
section:nth-child(3) {
margin-left: -20px;
margin-right: -20px;
}