diff --git a/ruoyi-admin/src/main/resources/static/css/main-style.css b/ruoyi-admin/src/main/resources/static/css/main-style.css
index 6764280..e93274a 100644
--- a/ruoyi-admin/src/main/resources/static/css/main-style.css
+++ b/ruoyi-admin/src/main/resources/static/css/main-style.css
@@ -264,7 +264,7 @@ body.FoamerScada {
 body.Foamer2 {
     height: auto;
     width: auto;
-    background: url(../img/foamer21.jpg) no-repeat center fixed;
+    background: url(../img/foamer21.png) no-repeat center fixed;
     -webkit-background-size: cover;
     -moz-background-size: cover;
     -o-background-size: cover;
diff --git a/ruoyi-admin/src/main/resources/static/img/board/intelligentRefrigeratorInterconnectionFactory/layerOne.png b/ruoyi-admin/src/main/resources/static/img/board/intelligentRefrigeratorInterconnectionFactory/layerOne.png
index ef0bb7e..3aa3063 100644
Binary files a/ruoyi-admin/src/main/resources/static/img/board/intelligentRefrigeratorInterconnectionFactory/layerOne.png and b/ruoyi-admin/src/main/resources/static/img/board/intelligentRefrigeratorInterconnectionFactory/layerOne.png differ