CSS3 tab-size (Interactive Example)

​x
 
<!DOCTYPE html>
<title>Example</title>
<style>
pre {
  tab-size: 2;
  animation: myAnimation 3s ease 1s 5 alternate forwards;
}
​
@keyframes myAnimation {
  100% {
    tab-size: 12;
  }
}
</style>
​
<pre>
No tab
    One tab
        Two tabs
</pre>