diff --git a/index.html b/index.html
index 9138120d..17838d29 100644
--- a/index.html
+++ b/index.html
@@ -38,7 +38,7 @@ <h2>— Co-create the digital future—</h2>
       </div>
       </div>
       <div class="center aligned column">
-        <div style="width: 600px;">
+        <div style="width: 450px;">
         <img class="ui fluid image" src="/assets/images/openAbout_ch.png" title="核心領域">
       </div>
       </div>