npx svelte-add tailwindcss

postcss.config.cjs

@@ -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;