webpack.config.dev.js

module.exports = {
    module: {
      rules: [
        {
          test: /\.scss$/,
          loader: "postcss-loader",
          options: {
            ident: "postcss",
            syntax: "postcss-scss",
            plugins: () => [
              require("postcss-import"),
              require("tailwindcss"),
              require("autoprefixer")
            ]
          }
        }
      ]
    }
  };