font-size.html

<html>
    <head>
        <title>CSS Typography</title>
        <style>
            body {
                font-size:16px;
            }
            h1{
                font-size:30px;
            }
            
            h2 {
                font-size:150%;
            }
            ol {
                font-size:1.5rem;
            }
        </style>
    </head>
    <body>
        <h1>CSS Typography</h1>
        <h2>Font size Units</h2>
        <ol>
            <li>pixels</li>
            <li>Percentage</li>
            <li>Ems</li>
            <li>REMs</li>
        </ol>
    </body>
</html>