<counters>
Similar to 'counter()', but used for nested counters (like 1.1, 1.2, 1.2.1). It combines the values of all counters with the same name into a single string.
Quick example
li::before {
/* Formats nested list items as 1, 1.1, 1.1.1, etc. */
content: counters(list-item, ".") " ";
}<counters> Browser Support
Widely available Since 2015 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
Safe to use without fallbacks.
1+
1.5+
3+
12+