You come to understand that most people are neither for you nor against you, they are thinking about themselves. You learn that no matter how hard you try to please, some people in this world are not going to love you, a lesson that is at first troubling and then really quite relaxing.” ​

John W. Gardner

fallback

The fallback descriptor can be used to specify a counter style to fall back to if the current counter style cannot create a marker representation for a particular counter value.
fallback (@counter-style) css reference