diff --git a/2020-Silk-Reroad/yousan.css b/2020-Silk-Reroad/yousan.css
index 9af387a..b2abffe 100644
--- a/2020-Silk-Reroad/yousan.css
+++ b/2020-Silk-Reroad/yousan.css
@@ -56,7 +56,7 @@
 
 .box {
    width: 100%;
-    height: 700px;
+    height: 900px;
     margin-top: 500px;
     padding: 10px;
     border: 1px solid black;