change the sixe of font in css code example
Example 1: how to change font size in html
<body>
<h1 style="color:red;font-size:40px;">Heading</h1>
<p style="color:blue;font-size:18px;">This is demo text</p>
</body>
Example 2: css change text size
p {
font-size: 150% /*px, cm, in, etc.*/;
}