Update assignment_ui.py

assignment_ui.py

@@ -539,7 +539,16 @@ def create_assignment_ui(user_data, assignment_service, submission_service, dash
             with gr.Row():
                 download_assignments_button = gr.Button("下載作業列表 CSV")
                 assignments_df_file = gr.File()
-            
+            with gr.Row():
+                gr.HTML("""
+                <div style="background-color: #f8f9fa; padding: 30px; border-radius: 15px; font-family: 'Helvetica', sans-serif;">
+                    <h2 style="color: #007bff; font-size: 28px; margin-bottom: 20px;">📝 學生回傳作業</h2>
+                    <div style="background-color: #e9ecef; padding: 15px; border-radius: 10px; margin-bottom: 20px;">
+                        <span style="color:#4e80ee; font-weight: bold;">提醒：</span>
+                        <span>評分已獲得綠燈 🟢 的同學，請老師聯繫樂寫公益學習網（cooldeark@gmail.com）以建立帳號</span>
+                    </div>
+                <div style="background-color: white; border-radius: 10px; padding: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
+                """)
             with gr.Row():
                 submissions_df = gr.Dataframe(
                     label="所有提交的作業",