AutoprefixerA PostCSS tool that adds vendor prefixes to CSS — keeps stylesheets working across browsers automatically. reads plain CSSCascading Style Sheets — the language for layout, color, and typography on web pages. and inserts `-webkit-`, `-moz-`, and `-ms-` prefixes where needed — freeing developers from memorizing which browsers needed prefixed flexbox or gradients. It started as rework-vendors, became AutoprefixerA PostCSS tool that adds vendor prefixes to CSS — keeps stylesheets working across browsers automatically. within weeks, and later migrated to PostCSS — becoming one of the most-used CSSCascading Style Sheets — the language for layout, color, and typography on web pages. build tools in history.

AutoprefixerA PostCSS tool that adds vendor prefixes to CSS — keeps stylesheets working across browsers automatically. automated the most tedious part of writing cross-browser CSSCascading Style Sheets — the language for layout, color, and typography on web pages..

It let authors write spec syntax and let tooling handle vendor-prefix churn.