Fix flashing styles on initial load

frontend/nuxt.config.ts

@@ -43,6 +43,10 @@ export default defineNuxtConfig({
     strict: true,
   },
 
+  features: {
+    inlineStyles: false,
+  },
+
   vite: {
     server: {
       hmr: {
@@ -53,4 +57,6 @@ export default defineNuxtConfig({
   },
 
   compatibilityDate: '2024-01-01',
+
+  css: ['~/assets/css/main.css'],
 })