diff --git a/dsLightRag/static/YunXiao/course_page.html b/dsLightRag/static/YunXiao/course_page.html
index bed2a8ed..ba8b630c 100644
--- a/dsLightRag/static/YunXiao/course_page.html
+++ b/dsLightRag/static/YunXiao/course_page.html
@@ -281,13 +281,14 @@
         }
 
         .sidebar-header {
-            background-color: #f5f5f5;
+            background-color: #0066CC;
             padding: 10px 15px;
             border-bottom: 1px solid #eee;
             font-weight: bold;
             display: flex;
             justify-content: space-between;
             align-items: center;
+            color: #FFFFFF;
         }
 
         .resource-list {
@@ -568,8 +569,7 @@
         <div class="sidebar">
             <div class="sidebar-card">
                 <div class="sidebar-header">
-                    <span>课程资源</span>
-                    <span>∧</span>
+                    <span>课程资源</span>                    
                 </div>
                 <ul class="resource-list">
                     <li class="resource-item">