CSS Font Size
HTML
<html>
<head>
<link type="text/css" rel="stylesheet" href="style.css">
</head>
<body>
<p>Example of font-size:150%</p>
<ol>
<li>My size is 10px</li>
</ol>
<ul>
<li>I'm x-large</li>
</ul>
</body>CSS
p { font-size: 150%;}
ol{ font-size: 18px;}
ul{ font-size: x-large;}