Are vendor prefixes not needed to be declared anymore? Does the application automatically add the needed prefixes?
Vendor prefixes aren't required anymore as all supported browsers recognize the standardized properties.
Is there a page here listing the supported browsers?
- Chrome: Latest version
- Firefox: Latest version + LTS to some extent
- Edge: Latest version
- Internet Explorer: 11 only
- Safari: Latest version + Safari 9 (last available version of iPad 2nd Gen and iPhone 4S)
Mobile browsers fall into the listing above, browsers that are significantly similar to others inherit their guideline (e.g. Opera is treated as Chrome due to both being built on the same versions of Chromium).