Gulp-autoprefixer not working?

Question

css

autoprefixer treats the comment as an error. How to fix it?

Answer 1

first compile sass then add prefixes

Answer 2

try /* */

Answer 3

You
must have

.pipe(prefixer({
  browsers: ['last 2 versions'],
  cascade: false
}))

https://www.npmjs.com/package/gulp-autoprefixer
Either use browserslist file , example