Import project configuration: postcss.config.mjs

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

postcss.config.mjs

@@ -0,0 +1,8 @@
+const config = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
+
+export default config;