update r2-bs-alert style

Author: lewis617

r2-bs-alert/src/App.css

@@ -1,3 +1,4 @@
 .App{
     width: 500px;
+    padding: 20px;
 }

r2-bs-alert/src/App.test.js

@@ -4,7 +4,7 @@ import { createStore, combineReducers, applyMiddleware } from 'redux';
 import { Provider } from 'react-redux';
 import thunk from 'redux-thunk';
 import App from './App';
-import { reducer as alertsReducer, alertMessage } from './alert';
+import { reducer as alertsReducer } from './alert';
 import 'bootstrap/dist/css/bootstrap.css';
 
 const store = createStore(