diff --git a/ruoyi-admin/src/main/resources/static/css/board/box.css b/ruoyi-admin/src/main/resources/static/css/board/box.css
index bc3d670..eacdde3 100644
--- a/ruoyi-admin/src/main/resources/static/css/board/box.css
+++ b/ruoyi-admin/src/main/resources/static/css/board/box.css
@@ -1,12 +1,4 @@
-.mid {
-    background: url(../../img/board/box/mid.png) no-repeat;
-    background-size: 100% 100%;
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-}
+
 .occupancy{
     position: absolute;
     top: 18.7%;
diff --git a/ruoyi-admin/src/main/resources/static/img/board/box/mid.png b/ruoyi-admin/src/main/resources/static/img/mid.png
similarity index 100%
rename from ruoyi-admin/src/main/resources/static/img/board/box/mid.png
rename to ruoyi-admin/src/main/resources/static/img/mid.png