Implement new structure

src/browser/index.tsx

@@ -0,0 +1,18 @@
+import * as React from "react"
+import * as ReactDOM from "react-dom"
+import App from "./app"
+import { BrowserRouter } from "react-router-dom"
+
+import "./app.css"
+import "./pages/home.css"
+import "./pages/login.css"
+import "./components/error.css"
+import "./components/list.css"
+import "./components/modal.css"
+
+ReactDOM.hydrate(
+  <BrowserRouter>
+    <App />
+  </BrowserRouter>,
+  document.getElementById("root")
+)