Fix App.jsx two-page workflow JSX render and update study app layout

node_modules/docx/dist/file/checkbox/checkbox.d.ts

@@ -0,0 +1,8 @@
+import { XmlComponent } from '../xml-components';
+import { ICheckboxSymbolOptions } from './checkbox-util';
+export declare class CheckBox extends XmlComponent {
+    private readonly DEFAULT_UNCHECKED_SYMBOL;
+    private readonly DEFAULT_CHECKED_SYMBOL;
+    private readonly DEFAULT_FONT;
+    constructor(options?: ICheckboxSymbolOptions);
+}