diff --git a/css/details.css b/css/details.css
index 692e2ed..649599e 100644
--- a/css/details.css
+++ b/css/details.css
@@ -1625,7 +1625,7 @@
   height: 100vh;
   background-color: rgba(0, 0, 0, 0.5);
   z-index: 1000;
-  animation: fadeBackground 1s infinite;
+  animation: fadeBackground 3s infinite;
 }
 @keyframes fadeBackground {
   0% {
diff --git a/css/details.less b/css/details.less
index d5d271a..0c0aba0 100644
--- a/css/details.less
+++ b/css/details.less
@@ -1859,7 +1859,7 @@
     height: 100vh;
     background-color: rgba(0, 0, 0, 0.5);
     z-index: 1000;
-    animation: fadeBackground 1s infinite;
+    animation: fadeBackground 3s infinite;
 }
 
 @keyframes fadeBackground {