<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point{
tab-size: 4;
-moz-tab-size: 4; /*Firefox*/
-o-tab-size: 4; /*Opera 10.6-12.1*/
}
#point1{
tab-size: 16;
-moz-tab-size: 16; /*Firefox*/
-o-tab-size: 16; /*Opera 10.6-12.1*/
}
</style>
</head>
<body>
<h1>CSS tab-size Property</h1>
<h2>tab-size: 4</h2>
<pre id="point">
tab-size is 4.
</pre>
<h2>tab-size: 16</h2>
<pre id="point1">
tab-size is 16.
</pre>
</body>
</html>