dark theme

src/index.tsx

@@ -2,8 +2,8 @@ import * as React from "react";
 import * as ReactDOM from "react-dom";
 import Hello from "./components/Hello";
 import Editor from "./Editor";
+import 'antd/dist/antd.dark.css';
 import './index.css';
-import 'antd/dist/antd.css';
 
 ReactDOM.render(
   <Editor />,