diff --git a/knowledge.py b/knowledge.py
index 6a4e9ee..28d32c9 100644
--- a/knowledge.py
+++ b/knowledge.py
@@ -45,7 +45,7 @@ class StudentKnowledge(object):
         now = datetime.now()
         for s in self.state.values():
             dt = now - s['date']
-            s['level'] *= 0.8 ** dt.days   # forgetting factor 0.95
+            s['level'] *= 0.95 ** dt.days   # forgetting factor 0.95
 
 
     # ------------------------------------------------------------------------
@@ -178,6 +178,7 @@ class StudentKnowledge(object):
     def get_knowledge_state(self):
         return [{
             'ref': ref,
+            'type': self.deps.nodes[ref]['type'],
             'name': self.deps.nodes[ref]['name'],
             'level': self.state[ref]['level'] if ref in self.state else None
             } for ref in self.topic_sequence ]
diff --git a/learnapp.py b/learnapp.py
index 7b331d1..9ed8e6a 100644
--- a/learnapp.py
+++ b/learnapp.py
@@ -246,6 +246,10 @@ class LearnApp(object):
     def get_topic_name(self, ref):
         return self.deps.node[ref]['name']
 
+    # # ------------------------------------------------------------------------
+    # def get_topic_type(self, ref):
+    #     return self.deps.node[ref]['type']
+
     # ------------------------------------------------------------------------
     def get_current_public_dir(self, uid):
         topic = self.online[uid]['state'].get_current_topic()
@@ -287,6 +291,7 @@ def build_dependency_graph(config={}):
         tnode = g.node[ref]  # current node (topic)
 
         if isinstance(attr, dict):
+            tnode['type'] = attr.get('type', 'topic')
             tnode['name'] = attr.get('name', ref)
             tnode['questions'] = attr.get('questions', [])
             g.add_edges_from((d,ref) for d in attr.get('deps', []))
diff --git a/serve.py b/serve.py
index 3bca462..92e721d 100755
--- a/serve.py
+++ b/serve.py
@@ -117,7 +117,8 @@ class RootHandler(BaseHandler):
             uid=uid,
             name=self.learn.get_student_name(uid),
             state=self.learn.get_student_state(uid),
-            title=self.learn.get_title()
+            title=self.learn.get_title(),
+            # get_topic_type=self.learn.get_topic_type,  # function
             )
 
 # ----------------------------------------------------------------------------
diff --git a/templates/maintopics.html b/templates/maintopics.html
index 650b562..b4d52a6 100644
--- a/templates/maintopics.html
+++ b/templates/maintopics.html
@@ -62,7 +62,7 @@
 
   <h4>{{ title }}</h4>
 
-  <div class="list-group my-3">
+  <div class="list-group">
     {% for t in state %}
       {% if t['level'] is None %}
         <a class="list-group-item list-group-item-action bg-light disabled">
@@ -83,12 +83,15 @@
             </div>
             <div class="ml-auto p-2">
               {% if t['level'] < 0.01 %}
-
                 <i class="fas fa-lock-open text-success"></i>
               {% else %}
+                {% if t['type']=='chapter' %}
+                  <i class="fas fa-trophy fa-lg text-warning"></i>
+                {% else %}
                 <span class="text-nowrap">
-                  {{ round(t['level']*5)*'<i class="fas fa-star text-warning"></i>' + round(5-t['level']*5)*'<i class="far fa-star text-muted"></i>' }}
+                  {{ round(t['level']*5)*'<i class="fas fa-star text-warning"></i>' + round(5-t['level']*5)*'<i class="far fa-star text-warning"></i>' }}
                 </span>
+                {% end %}
               {% end %}
             </div>
           </div>
diff --git a/templates/question-information.html b/templates/question-information.html
index dfe5221..5561b6d 100644
--- a/templates/question-information.html
+++ b/templates/question-information.html
@@ -1,5 +1,12 @@
-{% extends "question.html" %}
+{% autoescape %}
+
+<div class="card border-primary mb-3">
+  <div class="card-body text-primary">
+  <h3 class="card-title">{{ question['title'] }}</h3>
+  <p class="card-text">
+        {{ md(question['text']) }}
+    </p>
+  </div>
+</div>
 
-{% block answer %}
 <input type="hidden" name="question_ref" value="{{ question['ref'] }}">
-{% end %}
diff --git a/templates/question-success.html b/templates/question-success.html
index df9fcfa..41c2be6 100644
--- a/templates/question-success.html
+++ b/templates/question-success.html
@@ -1,9 +1,12 @@
 {% autoescape %}
 
-<h1 class="page-header">{{ question['title'] }}</h1>
-
-<div id="text" class="alert alert-success" role="alert">
-    {{ md(question['text']) }}
+<div class="card border-success mb-3">
+  <div class="card-body text-success">
+  <h3 class="card-title">{{ question['title'] }}</h3>
+  <p class="card-text">
+        {{ md(question['text']) }}
+    </p>
+  </div>
 </div>
 
 <input type="hidden" name="question_ref" value="{{ question['ref'] }}">
--
libgit2 0.21.2