增加基础应用结构。

src/App.css

@@ -1,42 +0,0 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
-}
-
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
-}
-
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
-}
-
-.card {
-  padding: 2em;
-}
-
-.read-the-docs {
-  color: #888;
-}

src/App.tsx

@@ -1,35 +1,14 @@
-import { useState } from 'react'
-import reactLogo from './assets/react.svg'
-import viteLogo from '/vite.svg'
-import './App.css'
+import { createBrowserRouter, RouterProvider } from 'react-router-dom';
+import { Notifications } from './components/Notifications';
+import { MainLayout } from './pages/MainLayout';
 
-function App() {
-  const [count, setCount] = useState(0)
+const routes = createBrowserRouter([{ path: '/', element: <MainLayout /> }]);
 
+export function App() {
   return (
-    <>
-      <div>
-        <a href="https://vite.dev" target="_blank">
-          <img src={viteLogo} className="logo" alt="Vite logo" />
-        </a>
-        <a href="https://react.dev" target="_blank">
-          <img src={reactLogo} className="logo react" alt="React logo" />
-        </a>
-      </div>
-      <h1>Vite + React</h1>
-      <div className="card">
-        <button onClick={() => setCount((count) => count + 1)}>
-          count is {count}
-        </button>
-        <p>
-          Edit <code>src/App.tsx</code> and save to test HMR
-        </p>
-      </div>
-      <p className="read-the-docs">
-        Click on the Vite and React logos to learn more
-      </p>
-    </>
-  )
+    <Notifications>
+      <title>Color Lab</title>
+      <RouterProvider router={routes}></RouterProvider>
+    </Notifications>
+  );
 }
-
-export default App

src/pages/MainLayout.module.css

@@ -0,0 +1,14 @@
+@layer pages {
+  .main_layout {
+    height: 100%;
+    width: 100%;
+    overflow: hidden;
+    display: flex;
+    flex-direction: row;
+    justify-content: flex-start;
+    align-items: stretch;
+  }
+  .content {
+    flex: 1 0;
+  }
+}

src/pages/MainLayout.tsx

@@ -0,0 +1,14 @@
+import { Outlet } from 'react-router-dom';
+import { NavigationMenu } from '../page-components/navigation/NavigationMenu';
+import styles from './MainLayout.module.css';
+
+export function MainLayout() {
+  return (
+    <div className={styles.main_layout}>
+      <NavigationMenu />
+      <div className={styles.content}>
+        <Outlet />
+      </div>
+    </div>
+  );
+}