<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
#grey {
color: grey;
}
#purple {
color: purple;
}
</style>
</head>
<body>
<h1>Example of the HTML class attribute</h1>
<p id="grey">
It is a some red paragraph.
</p>
<p>This is a some text.</p>
<p id="purple">
It is a some yellow paragraph.
</p>
</body>
</html>