Countdown timer problem

1

hello there,
I’m trying to create a countdown timer from 42 to 0,
that work pretty good, but I want to make more space between the the number 1 0 something like this

this is my code:


timer = 42;

countdown = function(){
     timer--;
     if(timer==0){
          clearInterval(countdownInterval);
     }
}

countdownInterval = setInterval(countdown,1000);

how i can make it?