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<html>
<head>
<style>
* {
font-family: Tahoma, Verdana, sans-serif;
}
h1 {
font-size: 36px;
}
h2 {
font-size: 24px;
}
p {
font-size: 14px;
}
</style>
</head>
<body>
<h1>CSS font-size</h1>
<h2>Set font size in px</h2>
<p>All elements are using fixed font size.</p>
</body>
</html>