如何强制徽章永远是一个圆圈？

I have a notification badge that sometimes it is a circle but sometimes oval depending on the number that's inside it. Say i have 5 new notification then since its a small number the badge is a nice circle but if the number is 22 or 523 then it is oval. Is there a way to make this badge always a circle? I am using materialize css and my html/css code is the following:I have a notification badge that sometimes it i