webpack打包css前綴自動取消，以及樣式沖突問題

   new ExtractTextPlugin({
      filename: utils.assetsPath('css/[name].[contenthash].css'),
      // Setting the following option to `false` will not extract CSS from codesplit chunks.
      // Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
      // It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`, 
      // increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
      allChunks: true, 如果是true的話css會打包成一個，有可能會沖突，改為false
    }),

前綴被去掉可以用

https://www.cnblogs.com/hezihao/p/8028856.html

postCSS一個簡單的配置，引入了autoprefixer插件。讓postCSS擁有添加前綴的能力，它會根據 can i use 來增加相應的css3屬性前綴