Published

This comes courtesy of Reddit which linked to an old Mozilla’s Bug-Tracker thread. 39 comments in total, not a very long read.

TL;DR Vendor-prefixed CSS Properties will eventually be removed. To future-proof your code, make sure to include the W3C standard property at the end of the declaration.

-webkit-transition: all 600ms ease;
-moz-transition: all 600ms ease;
-ms-transition: all 600ms ease;
-o-transition: all 600ms ease;
transition: all 600ms ease;

I have to take my hat off to those who replied to the thread. They did it with such patience, courtesy and professionalism. Kudos to them.