Use the tab-size property in CSS to set the width of a tab character. You can try to run the following code to implement the tab-size property
Example
<!DOCTYPE html>
<html>
<head>
<style>
#demo {
tab-size: 12;
}
</style>
</head>
<body>
<h1>The tab-size Property</h1>
<pre id = "demo">
This is demo text.
</pre>
</body>
</html>