Your code just works. Other threads such as this GitHub issue suggest to me that my problem might be that another tool I'm using in my gulpfile may be running autoprefixer itself a second time and stripping out -webkit-flex, but I'm not sure where to start with that idea.. But you can use postcss-epub for prefixing ePub3 properties. I'll post my entire gulpfile below, but it is basically a very slightly customized version of the one found in BourbonSage which is a fork of Sage.

Thanks for contributing an answer to Stack Overflow! We can, of course, write vendor CSS prefixes by hand, but it can be tedious and error-prone. - 1.0.1 - a JavaScript package on npm - Libraries.io But avoid …. No, Autoprefixer works only with browsers prefixes from Can I Use. All source code included in the card How to test Autoprefixer and CSSnext in PostCSS is licensed under the license stated below. flexbox (boolean|string): should Autoprefixer add prefixes for flexbox properties. . If I use this site: https://autoprefixer.github.io/ Can I be 100% sure flexbox will work with ALL broswers? We can use services like Prefixr and text editor plugins, but it is still exhausting to work with big blocks of repeating code.. We can use mixin libraries with preproccesors like Compass for Sass or nib for Stylus. In this article, I'll show you how this dream can become reality with a tool called Autoprefixer. Compile, prefix, create sourcemaps, & minimize on the with minimal setup! There are no vendor prefixes or browser inconsistencies, no external libraries and no compilers. ... Or flexbox: "no-2009" will add prefixes only for final and IE versions of specification. Default is true . I want to start using flexbox, but it's not fully accepted by all browsers. This includes both code snippets embedded in the card text and code that is included as a file attachment. remove: false will disable cleaning outdated prefixes. I'll walk you through the problems it solves and how to set it up. Hopefully this helps anyone struggling in the future.

Autoprefixer logo by Anton Lovchikov The Problem.

Autoprefixer has an option you can add to the gulp task: flexbox: "no-2009", Add that and it keeps the -ms-flexbox and -ms-flex-wrap attributes and removes the display: -webkit-box one. Please be sure to answer the question.Provide details and share your research! With "no-2009" value Autoprefixer will add prefixes only for final and IE 10 versions of specification. This article is the second part in my series on flexbox. Asking for …