try fix nextchapter bug

Html/apps/extension_ase/ase_client/manager.py

@@ -120,6 +120,7 @@ class ChatManager:
 
 
     def next_chapter(self):
+        print(f"now next chapter {self.chapter_chain_now} and len {len(self.chapter_chain)}")
         assert self.chapter_chain_now + 1 < len(self.chapter_chain), "chapter_chain_now out of range"
         self.chapter_chain_now += 1
         self.bb.next_chapter()

Html/apps/static/css/lesson.css

@@ -1,4 +1,3 @@
-
 .add-step-btn, .add-phase-btn {
   background-color: #4CAF50;
   color: white;