To set the font-size property in CSS, you can use em. This is beneficial when you need pixel accuracy for the text. By default 1em = 16px, and 2em = 32px.
Example
<!DOCTYPE html>
<html>
<head>
<style>
.demo {
text-decoration: overline;
text-decoration-color: yellow;
font-size: 1.3em;
}
</style>
</head>
<body>
<h1>Examination Details</h1>
<p class="demo">Exam on 20th December.</p>
<p class="demo2">Exam begins at 9AM.</p>
</body>
</html>Output
Example
Let us now see another example −
<!DOCTYPE html>
<html>
<head>
<style>
div {
text-align: justify;
text-justify: inter-word;
color: white;
background-color: gray;
font-size: 1.5em;
}
</style>
</head>
<body>
<h2>Demo Heading</h2>
<div>This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. </div>
</body>
</html>Output
