diff --git a/src/styles/global.less b/src/styles/global.less
index c1104d73ab..66f0bbcd11 100644
--- a/src/styles/global.less
+++ b/src/styles/global.less
@@ -824,7 +824,7 @@ body {
       display: block;
       height: 100%;
       background-repeat: no-repeat;
-      background-size: 100%;
+      background-size: cover;
       background-position: center;
     }