Prefixes are used for older versions where the rules were not on the standard at that point, and we shouldn't use a property or a CSS rule that only works on one browser since it's not going to work on browsers that are older and we support.
Only if you are using old versions of browsers (talking in years)
Plus the autoprefixer is present during the build and not on the development phase.
Feature
More information: #85
More information: #85
No