Increase font size of numbers on manual alarm panel keypad

Configuration Frontend
12

Seem like the original poster didn’t get his answer, I’m also having problem changing the keypad font size. I tried changing the css style for .pad .mwc-button , but all other attributes like width and height takes effect, except font-size. Anyone know why?

Using HA 0.95

.pad mwc-button {
        position: relative;
        padding: calc(var(--base-unit)*0.5);
        font-size: calc(var(--base-unit) * 2);
        min-width: calc(var(--base-unit) * 5);
      }