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

node_modules/docx/dist/file/paragraph/math/n-ary/index.d.ts

@@ -0,0 +1,11 @@
+export * from './math-accent-character';
+export * from './math-base';
+export * from './math-limit-location';
+export * from './math-n-ary-properties';
+export * from './math-sub-script';
+export * from './math-sum';
+export * from './math-integral';
+export * from './math-super-script';
+export * from './math-limit';
+export * from './math-limit-upper';
+export * from './math-limit-lower';