diff --git a/index.html b/index.html
index 6c33709..b64c5bc 100644
--- a/index.html
+++ b/index.html
@@ -43,7 +43,6 @@
             icon.classList.toggle("fa-sun");  
         }
     </script>
-}
 </head>
 
 <body bgcolor="#FFFFFF">
@@ -61,7 +60,7 @@
     </div>
 
     <h1>YANG, Chen</h1>
-    <div id="shadowbox">
+    <div>
         <table>
             <tbody>
                 <tr>
@@ -86,8 +85,9 @@
         </table>
     </div>
 
+    <br><br>
 
-    <hr id="teaching" class="style-zero">
+    <hr id="teaching" class="style-one">
 
     <p>
     <h3>Teaching <br> <a class="extlink" href="https://blackboard.cuhk.edu.hk" target="_blank">[Blackboard@CUHK]</a></h3>
