Awesome

postcss-unprefix

Unprefixes vendor prefixes in legacy CSS.

Though, please use autoprefixer as part of your build process to ensure proper browser support.

Installation

npm install --save postcss-unprefix

Usage

var postcss = require("gulp-html-postcss");
var unprefix = require("postcss-unprefix");
var autoprefixer = require("autoprefixer");

gulp.task("clear-css", function () {
	var processors = [
		unprefix,
		autoprefixer,
	];
	return gulp.src("./src/**/*.css")
		.pipe(postcss(processors))
		.pipe(gulp.dest('./dest'));
});

Input

.flex {
	display: -webkit-flex;
	display: -moz-flex;
	-webkit-flex: 1;
}

Output

.flex {
	display: flex;
	flex: 1;
}