How to make the numbers in the flipclock.js counter in Safari decrease?

Question

JavaScript

There is a counter script flipcklock.js It adaptively decreases on different devices
CSS Code:
.clock
zoom: 0.8
But in Safari for some reason the dial itself decreases, but the numbers do not. They remain the same. How to reduce the numbers themselves?

Answer 1

I'll answer my own question myself :)
I set the size of the numbers not in pixels, but in em. The result is this code (I'm using SASS):
.flip-clock-wrapper ul li a div div.inn
font-size: 1em