diff --git a/html/document.less b/html/document.less
index b0da61f..cd1c17a 100644
--- a/html/document.less
+++ b/html/document.less
@@ -42,7 +42,11 @@ header{
 }
 .loading-box{
     position: fixed;
-    inset: 0;
+    
+    top:0;
+    right:0;
+    left:0;
+    bottom:0;
     z-index:1;
     background:#FFF;
     h2{
@@ -55,7 +59,11 @@ header{
         height: 40px;
         margin:auto;
         position: absolute;
-        inset: 0;
+        
+    top:0;
+    right:0;
+    left:0;
+    bottom:0;
         opacity: 0;
         animation: opacityIn 3s ease 1s;
     }