Problem with the css of the scrollbar in firefox

Question

I am currently building a website and I want it to work well on chrome, IE10 and firefox. However, I have the problem that the scrollbar in firefox has the standard design because the command ::-webkit-scrollbar (Documentation) does not work. However, I would like to achieve the same design as in Chrome without a third-party library. This includes defining the exact height, width and colors of the scroll bar. Maybe someone knows a solution how it is possible to get all these functions in firefox?

Thanks in advance