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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Reference</title>
<style>
#two {
color: green;
background: green;
}
#three {
color: green;
background: green;
}
</style>
<body>
<p>This paragraph should be followed by two green blocks.</p>
<p id="two">This text should NOT be visible.</p>
<p id="three">This text should NOT be visible.</p>
</body>