diff --git a/app/public/index.html b/app/public/index.html
index 0a1a452..fb678c7 100644
--- a/app/public/index.html
+++ b/app/public/index.html
@@ -100,6 +100,8 @@
         margin-top: 20px;
         font-size: 18px;
         color: #333;
+        text-align: center;
+        max-width: 90%;
       }
     </style>
     <title>中山選課助手</title>