Added the bricks (and improve the bouncing)

index.html

@@ -5,14 +5,21 @@
         body {
             margin: 0;
             padding: 0;
+            align-items: center;
+            justify-content: center;
+            display: flex;
         }
+        canvas { border:1px solid black; }
     </style>
 <!-- ------------------------------------------ -->
-    <script src="Key.js"></script>
+    <script src="Keyboard.js"></script>
     <script src="Board.js"></script>
 <!-- ------------------------------------------ -->
     <script src="GameIntro.js"></script>
 <!-- ------------------------------------------ -->
+    <script src="GameOver.js"></script>
+    <script src="Bricks.js"></script>
+    <script src="Levels.js"></script>
     <script src="Score.js"></script>
     <script src="Lives.js"></script>
     <script src="Bar.js"></script>