<a href="{assignment_data['assignment_url']}" target="_blank" style="display: inline-block; padding: 10px 15px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; transition: background-color 0.3s;" onmouseover="this.style.backgroundColor='#0056b3'" onmouseout="this.style.backgroundColor='#007bff'">點擊前往作業</a>

assignment_ui.py

@@ -121,7 +121,7 @@ def create_assignment_ui(user_data, assignment_service, submission_service):
                         
                         <div style="margin-bottom: 20px;">
                             <div style="font-weight: bold; color: #17a2b8; margin-bottom: 5px;">🔗 作業連結</div>
-                            <a href="{assignment_data['assignment_url']}" style="display: inline-block; padding: 10px 15px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; transition: background-color 0.3s;" onmouseover="this.style.backgroundColor='#0056b3'" onmouseout="this.style.backgroundColor='#007bff'">點擊前往作業</a>
+                            <a href="{assignment_data['assignment_url']}" target="_blank" style="display: inline-block; padding: 10px 15px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; transition: background-color 0.3s;" onmouseover="this.style.backgroundColor='#0056b3'" onmouseout="this.style.backgroundColor='#007bff'">點擊前往作業</a>
                         </div>
                         
                         <div>