<!DOCTYPE html>
<html>
    <head>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <style>
        p {
            font-family: system-ui;
            text-decoration: underline;
            margin-top: 0;
            margin-bottom: 0;
        }
        </style>
    </head>
<body>
    <p>font-size is default</p>
    <p style="font-size: 8px;">font-size is 8px</p>
    <p style="font-size: 12px;">font-size is 12px</p>
    <p style="font-size: 16px;">font-size is 16px</p>
    <p style="font-size: 20px;">font-size is 20px</p>
    <p style="font-size: 24px;">font-size is 24px</p>
    <p style="font-size: 32px;">font-size is 32px</p>
    <p style="font-size: 40px;">font-size is 40px</p>
    <p style="font-size: 50px;">font-size is 50px</p>
</body>
</html>
