module.exports = {  
  "plugins": {
    "postcss-import": {},
    "postcss-url": {},
    "autoprefixer": {
        browsers: ['last 5 version','Android >= 4.0'],
        //是否美化属性值 默认：true 
        cascade: true,
        //是否去掉不必要的前缀 默认：true 
        remove: true
    }  
  }  
}