POS UI Extension make buttons full-width

In my POS UI extension, I want these two buttons to fill the entire width of the screen (i.e. half of the screen for each button). How do I do that?

This is my current code:

<s-stack gap="small" direction="inline" inlineSize="auto">
            <s-button
              variant="secondary"
              onClick={() => navigation.navigate(SCREENS.REMOVE_CASH_SCREEN)}
              disabled={currentExpectedCashAmount.isZero()}
            >
              {t({
                de: "Bargeld entfernen",
                en: "Remove cash",
              })}
            </s-button>
            <s-button
              variant="secondary"
              onClick={() => navigation.navigate(SCREENS.ADD_CASH_SCREEN)}
            >
              {t({
                de: "Bargeld hinzufügen",
                en: "Add cash",
              })}
            </s-button>
          </s-stack>