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<html>
<head>
<style>
.red {
color: red;
}
.blue {
color: blue;
}
.red.blue {
color: purple;
}
</style>
</head>
<body>
<h1>Class Attribute Example for the p Element</h1>
<p class="red">This text is red.</p>
<p class="blue">This text is blue.</p>
<p class="red blue">This text is purple</p>
</body>
</html>