Where are Webflow's Elements CSS classes?


I am trying to modify Webflow’s custom elements like slider elements. One of them is the “Slide Nav” Number labels which seem to be hardcoded. If I want to change the styling of that, I have to do so with embed code. While lurking the forums, I came across this class “.w-slider-dot” which appears to be the right one to style those default dots that come with the Slider Element.
So, I am wondering if there’s any documentation where I can find those classes that come bundled with Webflow, like…where can I find more besides “.w-slider-dot”? Is it part of an API?

Thank You.