Browser vendors needed a way to add support for new features that were not yet standardized, but without messing up later changes or creating incompatibles. To solve this issue Vendor Prefixes were created. A vendor prefixes is a special prefix added to a CSS property. Each rendering engine has it's own prefix which will only apply the property to that particular browser.
The major browsers use the following prefixes:
-webkit-(Chrome, Safari, newer versions of Opera, almost all iOS browsers (including Firefox for iOS); basically, any WebKit based browser)-moz-(Firefox)-o-(Old, pre-WebKit, versions of Opera)-ms-(Internet Explorer and Microsoft Edge)
So, for exmaple, a Firefox prefix for the transform property will be written as -
.example { -moz-transform: value;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
-o-border-radius: 10px;
border-radius: 10px;
}
Autoprefixer
Working with Autoprefixer is simple: just forget about vendor prefixes and write normal CSS according to the latest W3C specs. You don’t need a special language (like Sass) or remember where you must use mixins.
Autoprefixer supports selectors (like :fullscreen and ::selection), unit function (calc()), at‑rules (@supports and @keyframes) and properties.
Because Autoprefixer is a postprocessor for CSS, you can also use it with preprocessors such as Sass, Stylus or LESS.
https://github.com/sindresorhus/sublime-autoprefixer
https://www.w3.org/TR/CSS/#css
