Tryit Editor v2.9

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<!DOCTYPE html>
<html>
<head>
<style>
h1, h2, p {
    text-align: center;
    color: red;
}
</style>
</head>
<body>

<h1>Hello World!</h1>
<h2>Smaller heading!</h2>
<p>This is a paragraph.</p>

</body>
</html>