Add option to specify the fade-out animation

[rodrigomf24]

I was trying to make the fade-out animation not too playful (I love the way it works by default, but I was required to make it more subtle). It would be great to add animation options for when the notification shows and hides. I tried adding classes and overriding the animations but I had no success.

[mansona]

@rodrigomf24 I don't know if this is still an issue for you but could you let me know if #251 (comment) solves your issue? Essentially we are no longer using Component CSS so it is much easier to override any styles (assuming the animations too).

[mansona]

I'm closing this now that #251 is merged and it should allow you to override CSS more effectively. Let me know if you have any more questions 👍