autoperfixer 版本配置

{

	"private": true,

	"dependencies": {

		"autoprefixer": "^9.3.1"

	},

	"browserslist": [

		">1%",

		"ie >8",

		"last 2 versions",

		"iOS >= 7",

		"Android > 4.1",

		"Firefox >= 20",

		"Safari >= 6"

	]

}