Add web files

web/astro.config.mjs

@@ -0,0 +1,17 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+
+import node from '@astrojs/node';
+
+import tailwindcss from '@tailwindcss/vite';
+
+// https://astro.build/config
+export default defineConfig({
+  adapter: node({
+    mode: 'standalone'
+  }),
+
+  vite: {
+    plugins: [tailwindcss()]
+  }
+});