Improve UI (#3)

Co-authored-by: Gregório Granado Magalhães <greg.magalhaes@gmail.com>

js/ui/postcss.config.js

@@ -0,0 +1,21 @@
+const tailwindcss = require('tailwindcss');
+const autoprefixer = require('autoprefixer');
+const cssnano = require('cssnano');
+
+const mode = process.env.NODE_ENV;
+const dev = mode === 'development';
+
+const config = {
+	plugins: [
+		//Some plugins, like tailwindcss/nesting, need to run before Tailwind,
+		tailwindcss(),
+		//But others, like autoprefixer, need to run after,
+		autoprefixer(),
+		!dev &&
+			cssnano({
+				preset: 'default',
+			}),
+	],
+};
+
+module.exports = config;