<html>
    <link rel="stylesheet" href="style.css">
    <body>
        body親要素160%
        <p>p子要素120%<br><a>a孫要素120%</a></p>
        <div>div子要素1.2em</div>
       <h2>h2子要素120%</h2>
    </dody>
</html>
html{font-size: 100%;}
body{font-size:160%} /*本文の文字サイズ*/
h2{font-size:120%;}
p{font-size:120%;}
a{font-size:120%;}
div{font-size:1.2em;}
h2{font-size:120%;}

External CSS

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External JavaScript

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