diff --git a/css/style.css b/css/style.css
index 54fb12b..08488c7 100644
--- a/css/style.css
+++ b/css/style.css
@@ -101,7 +101,7 @@
   width: 1.54rem;
   height: 0.51rem;
   background-repeat: no-repeat;
-  background-size: cover;
+  background-size: contain;
 }
 .header .menu .menu-group {
   display: flex;
diff --git a/css/style.less b/css/style.less
index b2d8499..4c37eda 100644
--- a/css/style.less
+++ b/css/style.less
@@ -138,7 +138,7 @@
             width: 1.54rem;
             height: 0.51rem;
             background-repeat: no-repeat;
-            background-size: cover;
+            background-size: contain;
         }
     }